Impact of CSR activities towards adoption of Mobile Banking

Abstract The purpose of this paper is to propose and examine a conceptual model that best explains key factors influencing Vietnamese customers’ intention to adopt mobile banking (m-banking). This paper examines three dimensions of Corporate Social Responsibility including Economic responsibility, Environmental responsibility and Social responsibility. Structural Equation Modeling (SEM) was conducted to analyze the data collected from the field survey questionnaires administered to a convenience sample of Vietnamese banking customers. The results showed that behavioral intention is significantly influenced by trust. Specifically, CSR initiatives play a vital role in building customer trust. Therefore, this study has attempted to fill this gap by empirically examining some of the essential factors influencing the adoption of m-banking from the Vietnamese customers’ perspective. Finally, practical and theoretical implications for both Vietnamese banks and researchers in the m-banking context are also discussed in the concluding section.

ABOUT THE AUTHOR Dr. Nguyen Van

PUBLIC INTEREST STATEMENT
Nowadays customers are increasingly using mobile banking increasingly in developing countries such as Vietnam; however, this usage rate is still not high because they are worried about the potential risk. Therefore, banks have to think about how to build trust to enhance customers' believe and persuade them to use mobile banking services is so important to attract more and more customers. Moreover, Vietnam is facing sustainable development due to fast growth without considering pollution matters and environmental issues. That is why we conducted this research to investigate whether CSR activities have any impact on customer perception through trust. Interestingly, the result shows that CSR has a vital role in building trust to affect the intention to use mobile banking in developing countries like Vietnam. Besides, trust mediated the relationship between CSR and intention to use mobile banking. Then, we give some implications for managers of banks in Vietnam to enhance intention to use mobile banking.

Introduction
Mobile financial services provide convenience and promptness to customers along with cost savings, banks are interested in expanding their market through mobile services. In the last several years, retail banks in Vietnam have introduced and diffused mobile banking systems throughout their operations to improve people's quality of life and to bring efficiency to banks. In fact, according to Zhou (2012) mobile banking (m-banking) allows people to perform bank transactions anytime and anywhere. With m-banking, users can access account balances, pay bills, and transfer funds through mobile devices, instead of visiting banks or using internet banking based on computer (Gu et al., 2009). Mobile banking also benefits banks by promoting better efficiency and improved service quality. Data from 2019 shows that smart phone rate penetration in Vietnam was 72%, whereas m-banking transaction consisted of about 20% of the total bank transactions in 2019 1 so these numbers are relatively modest compared with many countries and it has not achieved its full potential. In other words, despite the fact that m-banking is beneficial to the customers, the adoption rate of m-banking in Vietnam is quite low and m-banking adoption is still in the early stage in comparison to other services provided by banks. Against this backdrop understanding the consumer intention toward m-banking will be very crucial for the marketing strategy of banking institutions Figure 1.
Furthermore, despite its rapid growth and its good economic performance, nowadays the Vietnamese business community has been facing important issues for its sustainable development, especially societal and environmental ones. Recent scandals of Vedan company committed to serious pollution in Thi Vai River, Vietnamese customers has boycotted Vedan's product. In the same case, Coca-Cola Vietnam was stayed away by consumers due to transferring price incidentally during a decade to avoid paying governmental tax. In other words, Vietnamese customers are willing to boycott any corporations if they violating Corporate Social Responsibilities. In the same vein, after a Formosa-Taiwan steel factory leaked toxic waste into the sea that caused massive fish deaths along a 200-km (124-mile) stretch of coastline in April 2016 and numerous cases of health safety problems, especially toxic ingredients found out in consumer goods, have raised greater concern about corporate social responsibility (CSR) in Vietnam.
In addition, a report by Nielsen revealed that an astounding 73% of Vietnamese online consumers were willing to pay more for products and services provided by companies committed to positive social and environmental impact. That figure beat Europe's 40%, Latin America's 63, North America's 42, and even topped ASEAN's sustainable champion Singapore, which came in at 48%. Research in mobile commerce has shown that trust is crucial for any business relationship (Palvia, 2009;Wang et al., 2015), especially in m-commerce, because it reduces uncertainty (Gu et al., 2009). In the same way,

Figure 1. Conceptual model
building users' initial trust is essential for mobile banking service providers (Zhou, 2012). Moreover, there are growing concerns about risk in online banking services across the world. During the last few years, internet-based attacks have increased tremendously and also highlighted the multiple cases of the theft or fraud, breaches of personal privacy and attacks by hackers (Littler & Melanthiou, 2006;So & Sculli, 2002). Therefore, this research aims to investigate whether CSR initiatives (Economic, Social, environment dimensions) effect on behavioral intention to use m-banking through customer trust.
This study differs from some past studies as follows. First, as Shaikh and Karjaluoto (2015) note, past studies have limited and mainly focused on SMS banking in developing countries and virtually no studies have addressed the use of m-banking applications via smartphones or tablets which is addressed in this study. Second, most of the past studies have studied the relationship between trust and intention to use m-banking but this study is one of the first studies to investigate the relationship of the CSR with m-banking intention adoption through trust. Third, many studies proved CSR has a vital role in creating customer trust in the Hospitality and Food industries and this study examines the role of CSR in the banking industry, particularly in m-banking, which has not yet been researched before. This study may find out valuable applications for bank managers to support their planning strategies and marketing campaigns that help banks develop sustainably.

Mobile banking
M-banking has received a considerable attention in academic research and thus several conceptualizations of m-banking currently exist. M-banking (m-banking) is defined as an application of m-commerce (Kim et al., 2009), an innovative method for accessing banking services (Luo et al., 2010) that offers additional value for customers by providing "anytime, anywhere" access to banking service (K. C. Lee & Chung, 2009). Turban, E., King, D., Viehland, D. & Lee, J. (2006. Electronic Commerce (2006) conceptualized m-banking as any form of banking transaction that is carried out through a mobile device, such as a mobile phone or a personal digital assistant.

CSR background
CSR covers the economic, legal, ethical and discretionary expectations that society has of organizations at a given moment in time (Carroll, 1979). CSR is the commitment by a company to improve the welfare of its community by implementing certain discretionary practices and increasing the availability of its resources (Kotler & Lee, 2005).
Throughout the past several decades, numerous aspects of CSR have been the subject of investigation in academic and business literature. Although the nature and scope of the CSR remains uncertain, scholars have tried to summarize and categorize various CSR activities (Maignan & Ferrell, 2001;Smith, 2003). One thing they all agree is that the purpose of business is to generate profits for shareholders, which is economic responsibility. In addition, following laws and legislations and keeping their business ethics seem to be a must-responsibility that society and the public automatically expect from business. It is noted that four dimensions of CSR (Carroll, 1998): economic, legal, ethical, and philanthropic responsibilities have been widely accepted among others and the four aspects of CSR are described in detail in the following part.
2.2.1.1. Economic responsibility. Some scholars argue that companies do not need to promote socially responsible actions because their only responsibility is to be profitable for stockholders (Friedman, 1970), which is an economic dimension of CSR. Novak (1996) defines economic responsibility as to be profitable for principals by delivering a good quality product at a fair price to customers. Novak more fully describes seven economic responsibilities: "(1) satisfying customers with goods and services of real value; (2) earning a fair return on the funds entrusted to the corporation by its investors; (3) creating new wealth, which can accrue to non-profit institutions which own shares of publicly held companies and help lift the poor out of poverty as their wages rise; (4) creating new jobs; (5) defeating envy though generating upward mobility and giving people the sense that their economic conditions can improve; (6) promoting innovation; and (7) diversifying the economic interests of citizens so as to prevent the tyranny of the majority".
2.2.1.2. Legal and ethical responsibilities. Business ethics and legal responsibilities have been studied in management studies and these are considered as must-responsibility (Carroll, 2000). These responsibilities are expected to be implemented all the time, and only when companies breach one of these responsibilities, it becomes an issue. The result is often negative publicity. Although many scholars categorize legal and ethical responsibilities together in their discussions of CSR, legal and ethical responsibilities can be completely different (Lantos, 2001). Maignan and Ferrell (2001) summarize some of the legal responsibilities including: accurate reporting of business performance, ensuring that products meet all legal standards, avoiding discrimination in hiring and compensation, and meeting all environmental regulations. Legal duties involve obeying the law and playing by the rules.
However, laws and legislation have flaws to ensure responsible actions. They only provide a moral minimum for business conduct; they are reactive (telling what ought not to be done) rather than proactive (telling what ought to be done); and they are often followed involuntarily (Carroll, 2000;Lantos, 2001).
On the other hand, ethical duties overcome the limitations of legal responsibilities. They involve being moral, doing what is just and fair; respecting peoples' rights; and avoiding and preventing damage caused by others (Smith & Quelch, 1993). Although ethical responsibilities are not necessarily codified into law, they include those policies, institutions, or practices that are either expected (positive duties) or prohibited (negative duties) by members of society (Carroll, 2000). They derive their source of authority from religious beliefs, moral traditions, and human rights commitments (Lantos, 2001;Novak, 1996). Some of the examples of ethical responsibilities by Maignan and Ferrell (2001) are as follows: implementing a code of conduct, organizing ethics training programs, incorporating integrity in the performance evaluation of employees, and providing full product information to customers. Today, virtually all members of the business system agree, at least in theory that corporations are expected to keep at least their promises of legal and ethical responsibilities. Carroll's (1998) philanthropic responsibility, also known as discretionary responsibility, is the most controversial issue raised over the legitimacy of CSR.

Philanthropic responsibility.
Philanthropy means "giving back" time and money in the forms of voluntary service, voluntary association, and voluntary giving. This reflects society's wish to see businesses participate actively in improving society beyond the minimum standards set by the economic, legal, and ethical responsibilities (Maignan & Ferrell, 2001). Over the past half century, business has been judged not only by its economic and moral performances, but also by its social contributions (Carroll, 1998;Lantos, 2001;Maignan & Ferrell, 2001). Philanthropic responsibility includes activities, such as providing work-family programs, reaching out to communities, and giving donations to charitable organizations (Maignan & Ferrell, 2000).
In marketing, philanthropic efforts by companies have been demonstrated through causerelated marketing (CRM). Whether it is to help children around the world, homeless people in the community, or providing shelters for animals, philanthropy has been implemented in many different ways. By doing this, companies hope to create a positive image of the company, which may lead a customer to purchase a product from the company (Cornwell & Coote, 2005;Lim & O'Cass, 2001;Nan & Heo, 2007).

Environmental responsibility.
Separate from the philanthropic definition of CSR, environmental responsibility has gained remarkable attention from governments, organizations, and the public in recent years. Laws and legislations have been made, and corporations have voluntarily participated in developing environmentally responsible ways to conduct their business.
Global warming and pollution have generated a great deal of public concern regarding the environment, which leads many to support environmental protections (Shepardson et al., 2009).
This environmental aspect of CSR has perhaps gained the most attention from marketing managers, and firms have put a tremendous amount of effort toward communicating with customers about their environmental efforts. Consumer behaviors on green purchasing and attitudes toward environmentally friendly products have been studied in many marketing studies (Manaktola et al., 2007;D. S. Chan, 2001;Shepardson et al., 2009;Tanner & Wölfing Kast, 2003;Tsai & Tsai, 2008).
Although Carroll's (1998Carroll's ( , 2000 four-dimension of CSR has been widely accepted by many scholars, existing marketing literature seems to generally agree on at least three dimensions of CSR: economic, philanthropic (also called social or discretionary), and environmental (Leigh et al., 1988;Málovics et al., 2008)

Effects of CSR 2.2.2.1. Effects of CSR on customers' attitudes.
Recent research suggests that socially responsible organizational behavior can positively affect consumers' attitudes toward the organization (C. B. Bhattacharya & Sen, 2003;Brown & Dacin, 1997;C.B. Bhattacharya & Sen, 2004). The findings indicate that consumers' awareness of a company's CSR practices have a positive influence on customers' attitudes toward the company, including an organization's image, reputation, and evaluation of product attributes (Park et al., 2014;). The effect occurs both directly and indirectly through customer-company identification (Anh & Nguyễn, 2021;Lichtenstein et al., 2004). For example if a consumer purchased products from a company that had recently teamed up with an environmental organization, would others conclude that he/she sincerely cared about the environment? This issue is important because many consumers are interested in reflecting their selfimages by using or purchasing certain products and brands (Yoon et al., 2006). Customers can be triggered by a company's CSR initiatives to develop a positive attitude toward the company. However, that is not always the case. Becker-Olsen et al. (2006) investigated the role of perceived fit (e.g., similarity between its mission and CSR initiatives) and timing of a CSR initiative (reactive vs. proactive) on consumers' responses to CSR initiatives. The results show that a low-fit between cause and the company's CSR action negatively affects consumer's belief, attitudes, and intentions and even with the high-fit initiatives if a firm was perceived reactive rather than proactive, its CSR initiatives have a negative impact on consumers. Thus, the companies should find an appropriate CSR action that can be perceived by customers as a right fit between CSR and the company.

Effects of CSR on customers' behaviors.
Much research suggests that CSR increases customer-company identification (CCID), repeat purchase, customer loyalty and trust (McDonald & Rundle-Thiele, 2008); however, others confirm that it is unlikely that consumers will blindly accept these CSR programs as sincere actions. They may or may not reward the firm (Barone et al., 2000;Creyer, 1997;Ellen et al., 2000;Sen & Bhattacharya, 2001), and in fact, some research suggests that consumers will punish organizations that are perceived as insincere in their social involvement Sen & Bhattacharya, 2001;Simmons & Becker-Olsen, 2006). Thus, companies must carefully review their CSR practices and when and how to use them for marketing communication purposes. Mohr and Webb (2005) performed an experiment to examine the influence of different prices and various CSR dimensions on consumers' response. They have manipulated two CSR domains (environment and philanthropy) and prices (higher and lower than average). The results found that both CSR domains have a positive impact on customers' purchase intention, and the environmental domain has a stronger impact on purchase intent than price does.

General background of mobile banking in Vietnam
Mobile banking came to the Vietnamese market in 2010, 9 years after internet banking, and developed quickly. Currently, there are 42 banks in Vietnam offer mobile banking services for their customers. 2 According to the statistical data of Smartlink card services joint stock Company, there are more than 40 million customers using mobile banking services. With 22% of Vietnamese have bank accounts and more than 72% of Vietnamese owned at least one smartphone; the demand of mobile banking in Vietnam is high. The target of mobile banking is young customers whose age from 18 to 34 (Nguyen, 2014). This group is highly adaptive and easy to accept new technology. However, the current usage of mobile banking in Vietnam is below potential. According to a representative of Smartlink card services joint stock Company, the growth of mobile banking in Vietnam needs more time to meet its demand because customers are still used to their familiar payment channels. The Vietnamese are unaware of modern payment services. 3 The security dilemma also raises a difficulty for most banks when they started offering mobile banking services since bank's customers concerns about risk in online banking services because most of the internet services are operating in an open environment, their applications and outcomes are vulnerable to security and privacy threats such as phishing activities, malwares, spywares, spoofing, and password-sniffing. Vietnamese people also prefer a simple way to access their bank accounts via mobile device but also want it to be secured in case of lost or stolen device. Most mobile banking services available in Vietnam now are either lack of convenience, simplicity or security, which hinders the potential of mobile banking.

Picture of CSR activities in Viet Nam
that occurred during the last decade has brought to Vietnamese businesses, especially the private sector that comprised mainly small and medium enterprises (SME), opportunities to expand their activities and to go global. Most importantly, it enables the private sector to grow and to contribute remarkably to the economic development of the country. While holding just 30% of the total national assets, the Vietnamese private businesses contribute 40% to GDP, 30%-40% to export turnover and absorb 50% of the total workforce. Despite its rapid growth and its good economic performance, the Vietnamese business community has been facing nowadays important issues for its sustainable development, especially societal and environmental ones, including waste management, energy saving, systematic implementation of workplace safety standards, and taking care of the well-being of workers as well. Recent scandals involving factories committed to serious pollution in the Thi Vai River and numerous cases of health safety problems,especially tainted milk distribution, toxic ingredients found in consumer goods, have raised greater concerns about corporate social responsibility (CSR) in Vietnam. Along with these environmental and health issues, Vietnamese export-oriented companies have been also encountering problems of good citizenship when their foreign investors and buyers require them to take business practices based on respect for people, communities and the environment. For instance, the U.S.-Vietnam textiles agreement signed in May 2003 included an obligation for the Vietnamese authorities to encourage exporting companies to implement CSR codes in return for access to the U.S. market; Moreover, different from other countries, Vietnam's environment has been ravaged by a history of wars, aggressive industrial development and poor environmental regulation. Every year, 220,000 tons of industrial waste is dumped into the Mekong River, where fishermen reel in their living next to the beer and cement factories that are putting cancer rates through the roof.
Poor mining practices and other industrial activity have polluted so much of the country's soil and water that access to safe drinking water is becoming a real problem. Ecologies sprayed with Agent Orange during the Vietnam War are still recovering, climate change has created typhoons devastating coastal communities, and floods are destroying countless farms along the Mekong River Delta.
Vietnam's factories have promoted CSR in more ways than demonstrating what happens if you do not respect it. Thanks to historically cheap labor and low standards for labor rights, Vietnam has long been attractive to Western countries looking for a place to outsource manufacturing operations. Many Vietnamese manufacturers produce goods for Western corporations. This means they are subject to the high CSR standards of fully developed economies overseas and in Europe.
This influence has bled into most of Vietnam's big businesses-and because Western buyers support the Vietnamese economy (and vice versa), outside funding is being provided to enhance the topic of CSR at the political level.
In 2004 Vietnam Government adopted the Strategic Orientation for Sustainable Development, which identifies 19 prioritized areas under the three pillars (economic, social and environmental) of corporate social responsibility. This better defined the government's responsibilities when it comes to CSR, and led to the development of Vietnam's "Green Growth" strategies for 2011 to 2020.
In recent decades, Vietnam has experienced changing in customer's behavior; "green consumption" is the primary trend of consumption around the world. Not only do consumers desire using high-quality products but also they crave for safe and friendly products which are produced by a highly reputable and responsible company. Environmental problems become social problems (Fierman, 1991). The 1990s was called as "Earth decade" (McDaniel & Rylander, 1993) or "Environmental decade" (McDougall, 1993). Several studies have also indicated the concerning to individual environment (Donaton & Fitch, 1992;T. S. Chan, 1996;Thao et al., 2019) and awareness towards consumer environment (Ellen et al., 1991;Kim & Choi, 2005;Verhoef, 2005) affecting positively to purchasing intention of consumers.
Though some companies still employ unfair labor standards, and many factories still dump waste into the water and pump greenhouse gases into the hazy sky, Vietnam is a country bent on improving CSR. This was the same story as 10 years ago, but the difference is that now, things are actually happening. Vietnam is starting to make good on its promises to develop sustainably, and to create businesses that will facilitate that process and create a better life for its citizens.
Therefore, it can be concluded that CSR is a relatively new matter in Vietnam. Nevertheless, recently, with the environmental disasters and the negative consequences on the society caused by enterprises, the social responsibility has become urgent. In Vietnam, the implementation of CSR is fully in conformity with targets of sustainable development strategy. In other words, Vietnam government, Vietnamese business owners and customers have been recognizing the importance of CSR now and activities of reactions of consumer in recent years have reflected that the term Corporate Social Responsibilities is an issue getting a lot of attention from communities. For example, the "The Corporate Social Responsibilities Award" is organized annually to appreciate corporations which perform well Corporate Social Responsibilities.
Besides, recently customers are willing to boycott corporations because of violating Corporate Social Responsibilities. For instance, Vedan's products and Coca-Cola Vietnam are stayed away by consumers due to polluting Thi Vai River and transferring price incidentally during a decade to avoid paying governmental tax, respectively. Hence, recently companies have realized the importance of CSR with a tool of marketing strategies to help companies build the image, trust and reputation to develop sustainably and gain advantages against the competitors. One of an example is Vietcombank (VCB), one of the biggest state-owned commercial banks in Vietnam. VCB is aware of corporate social responsibility so Vietcombank often pays attention to social welfare and charity activities that have large impact on the society such as " Nghia tinh Truong Son", "Noi vong tay lon", "Ngay vi nguoi ngheo" . . . ; equipped ship CQ-01 for the Navy Forces, supported earthquake and tsunami victims in Japan. Over the past year, Vietcombank has spent over 100 billion VND for these social welfare programs, especially in 2015 VCB spent more than 2566 billion to social welfare contribution, supporting community for the overall development of society. Hence, from 2012 to 2016 VCB was chosen the most favorable bank in Vietnam.
Also, since its operation in September 1996, VIB has constantly implemented different community-oriented activities (CSR) in many localities across the country, apart from banking operations. This is aimed to make contributions to people's development and social life of the local people.
Over the past years, VIB has been actively involved in significant social programs, focusing on three areas: Education, Environment, and Enrichment. For instance, the bank has donated money to support victims of the CanTho Bridge collapse, construction of hospitals for poor people of Kien Giang province, the Operation Smile Fund, people in the flooded areas in central provinces and so on. Specially, VIB has sponsored the Academy of Banking's "Future Bankers" program and the program "Glorify Vietnam", and Vietnamese talents nurturing program for poor primary school students with high achievements across the country, etc . . . In 2013, VIB was honored with "The Excellence of Corporate Social Responsibility" award granted by the Ministry of Planning and Investment and the Economics & Forecast magazine.
Especially, since the beginning of 2018, SHB has implemented many social activities for the community, such as a series of programs "Love sharing-Light the future" to award scholarships to poor students who overcome difficulties, building 20 "Warm-hearted" houses for the soldiers of Quang Tri Ancient Citadel in extremely difficult circumstances in 18 provinces and cities across the country; donated over 4 billion VND to build Dong Loc Fork Temple in Ha Tinh province.
By all above picture of CSR in Vietnam, this study's purpose is investigating the relationship between CSR activities with three dimensions (economic, social, environment) on consumer's intention to use m-banking.

CSR initiatives
Previous studies have used the concept of CSR in the marketing and consumer behavior literature, with several scholars examining the influence of CSR initiatives and consumer responses on financial performance (Brown & Dacin, 1997;Sen & Bhattacharya, 2001). Several studies have attempted to investigate the effects of CSR on factors such as customer loyalty, trust, word-of-mouth, intentions, attitudes, satisfaction, and brand identification (Handelman & Arnold, 1999;Luo & Bhattacharya, 2006;Sen & Bhattacharya, 2001). From an economic perspective, the fundamental motivation for CSR is to maximize firm profitability for shareholders (Zenisek, 1979). However, some scholars have indicated that corporations bear a responsibility to contribute to the betterment of society as a whole (Brown & Dacin, 1997;Davis, 1975;Drumwright, 1996;Handelman & Arnold, 1999), as well as to integrate environmental concerns in business operations (Dahlsrud, 2008;Homburg et al., 2005).
A firm's CSR activities engender its image of honesty, integrity, credibility and high responsiveness towards customer concerns (Sirdeshmukh et al., 2002). Maignan and Ferrell (2000) argue that a firm's CSR activities can be a good source of customer trust and reduction of skepticism. For example, Swaen and Chumpitaz (2008) study cosmetics and sportswear customers and report that CSR perceptions positively impacted customer trust. These scholars argue that CSR perceptions and trust are significant variables in the cultivation of long-term affiliations between customers and firms. Moreover, Salmones et al. (2009) identify a direct relationship between a firm's ethical responsibility and customer trust in retail service markets. Similarly, Choi and La (2013) state that a firm's ethical-legal responsibility positively affects customer trust in service contexts.
In addition, in recent decades customers have experienced changing in customer's behavior; "green consumption" is the primary trend of consumption around the world. Not only do consumers desire using high-quality products but also they crave for safe and friendly products which are produced by a highly reputable and responsible concerning to individual environment (T. S. Chan, 1996) and awareness towards consumer environment (Kim & Choi, 2005;Verhoef, 2005) affecting positively to purchasing intention of consumers. In addition, many scandals related to environmental issues such as Formosa, Vedan cause the boycott behavior of Vietnamese to those companies.
Besides that, McDowall (2011) showed that behavioral or purchase intention is an indicator to explain customer's future consumption behavior, typifying the individual likelihood of customer purchases. In other words, behavioral intention can be understood as the consumer's potential to purchase or recommend a specific product to others (Schiffman & Kanuk, 2000). C.B. Bhattacharya and Sen (2004) stated that CSR affects not only psychological variables (e.g., awareness, attribution, and attitude) but also behavioral variables (e.g., purchase intention and customer loyalty). CSR activities have a positive impact on consumers' purchase intention (Johan & Ulf, 2007). K. H. Lee and Shin (2010) noted that corporate social contribution and local community contribution affect consumers' purchase intention. Moreover, Sweetin et al. (2013) provide an interesting research, found that consumers had higher purchase intention to social responsible company than socially irresponsible company. Lin et al. (2011) also stressed that CSR activities increase the level of customer behavioral intention because they can enhance customers' evaluations of products and services of a company implementing CSR activities. Another study suggests implementing CSR activities is likely to lead to positive consequences for companies, such as enhancing consumer attitudes towards the company and increased purchasing behavior (Lichtenstein et al., 2004).
Therefore, based on the theoretical and empirical arguments stated above, the following hypotheses are proposed:

Trust
Mobile banking is an exchange situation without the physical presence of branch and personal interactions. Therefore, trust is a crucial element for decision-making (Grabner-Krauter & Kaluscha, 2003;Zhou, 2011). While consumers initially trust their e-vendors and have an idea that adopting online services is beneficial to job performance or lifestyle, they will eventually believe that on-line services are useful (Gefen et al., 2003). In particular, Gefen et al. (2003) investigated the role of trust in an on-line shopping setting explicitly indicated that trust is an antecedent of perceived usefulness. Trust also has a direct influence on a consumer's behavioral intention to use the service (Wu & Chen, 2005). Trust is one of the determinants of perceived usefulness, especially in an on-line environment (Vlachos et al., 2009). Pavlou (2003 also found that trust has a positive effect on perceived usefulness in an e-commerce setting. Therefore, we proposed:

H4: Trust has a positive impact on the behavioral intention to use m-banking services
Based on hypothesis development processing mentioned above, research model is illustrated as follows:

Measurement and methodology
A typical 7-point Likert scale was used to measure the constructs presented in the proposed model (scores were ranged from 1 = "strongly agree" to 7 = "strongly disagree" with "neutral" score = 4). The conceptualization and development of the questionnaire were based on the existing literature. The questionnaire instrument was developed based on the constructs of economic responsibility, social responsibility, environmental responsibility, trust, and intention to use m-banking. Intention to use m-banking (three items) was adopted from Cheng et al. (2006); Nasri and Charfeddine (2012). Three dimensions of CSR including nine items were adapted from Zhu et al. (2014); Park and Lee (2009) and were modified. In this study, the measures of trust including four items were based on studies in marketing area which examined the relationship between trust and various constructs and trust is the overall trust about the bank, so trust measurement was adapted from Wei et al. (2009);Suh and Han (2002) and then modified appropriately.
This study uses primary data collected from the questionnaire survey in selected provinces in southern of Vietnam to test the hypothesis. The questionnaire was surveyed by two-way paperbased and online methods In total, 612 samples were gathered and eligible for data analysis (235 samples supported via docs.google.com; 377 samples collected via a paper-based method). In order to test these hypotheses, structural equation modeling (SEM) was employed using the computer software program AMOS with maximum likelihood (ML) method of estimation. Table 1 summarizes the demographic characteristics of the respondents. As a whole, this sample consisted of generally young, well-educated Vietnamese consumers with a high level of income. These characteristics are representative of Vietnamese m-banking users with a young age as well as higher education and income levels compared to the general population.

Demographic results
Multiple response analysis was also done to evaluate the respondent's answers in the m-banking activities they frequently use. The top three m-banking activities are most frequently used by the respondents is the Transfer money (83.3%), followed by Account information inquiry (66.9%) and Pay bills (40.2%), respectively

Reliability and validity analysis
Reliability was done to test the degree to which the set of latent construct indicators are consistent in their measurements. The reliability of the variables was assessed by the Cronbach's Alpha and Item-Total Correlation. The acceptable threshold for Cronbach's Alpha is 0.70, while constructs which are highly inter-correlated indicate that they are all measuring the same latent constructs. The resulting alpha values range from 0.816 to 0.930 which is above the acceptable threshold of 0.7. Also, the item-total correlation test results are satisfactory.
A confirmatory factor analysis was conducted to test the measurement model. This assesses what the construct or scale is, in fact, measuring. To construct validity, two checks have to be performed: the convergent validity and discriminant validity. All the model-fit indices exceeded their respective common acceptance levels suggested by previous research, thus demonstrating that the measurement model exhibited a good fit with the data. Chi-square = 290.334, Chi-square /df = 3.089, p = .000; GFI = 0.944; TLI = 0.961; CFI = 0.969; RMSEA = 0.058.
Values for composite reliability are recommended to exceed 0.70 (Chin et al., 2003) and AVE values should be greater than the generally recognized cut-off value of 0.50 (Fornell & Larcker, 1981). Table 2 shows that all composite reliability and AVE values of Vietnam meet the recommended threshold values. Therefore, it is an evidence for convergent validity. In addition, the square root of AVE for each construct is greater than the correlations between the constructs and all other constructs, indicating that these constructs have discriminant validity.

Structural results: Hypothesis testing
The SEM results indicated that the model had an acceptable fit with data. In particularly, the indices of a model with data are Chi-square = 275.165, Chi-square/df = 2.959, p = .000; GFI = 0.947; TLI = 0.963; CFI = 0.972; RMSEA = 0.057. Table 3 presents standardized and unstandardized estimated path coefficients which were then examined to test the hypotheses. First, the direct effects of the three CSR initiatives on trust were  (H1a, H2a, H3a). The results revealed that the bank's economic responsibility activities had a positive impact on trust (β1a = 0.425, t = 5.829, p = 0.000), supporting H1a. The bank's environmental responsibilities similarly showed a positive effect on trust (β3a = 0.205, t = 2.512, p = 0.012), supporting H3a. On the other hand, the bank's social responsibility practices showed an insignificant impact on trust (β2a = 0.018, t = 0.151, p = 0.88). Thus, H2a was not supported.
H1b, H2b and H3b indicate the effects of the three CSR practices on the intention to use M-banking. The fulfillment of economic responsibilities had a positive impact on consumers' intention to use (β1b = 0.327, t = 5.265, p = 0.000), supporting H1b. Social and environmental CSR practices similarly showed a significant positive effect on intention to use M-banking (β2b = 0.264, t = 2.754, p = 0.006, and β3b = 0.168, t = 2.535, p = 0.011, respectively), supporting H2b and H3b. Results also showed that the consumer trust has a positive effect on intention to use M-banking (β4 = 0.609, t = 14.14, p = 0.000), thereby confirming H4.

Mediating analysis
Investigating the mediating role of trust in the relationship between the bank's CSR activities and its intention to use m-banking is a key objective for the study. In order to ascertain significant mediation effects, four conditions need to be met: (1) the three CSR initiatives should have a significant impact on trust; (2) the trust should significantly affect intention to use m-banking, (3) the predictor variables should significantly affect the dependent variable, and (4) the impact of the predictor variables on the dependent variable should not be statistically significant or be reduced after accounting for the effect of the mediator variable (trust) (Andrews et al., 2004).
The first two conditions were tested by estimating Model 3 (the fully mediated model) in Table 4 which specifies that the two categories of CSR initiatives can influence intention to use m-banking indirectly through trust. Model 3 showed an acceptable fit (χ2 = 310.59, df = 96; CFI = 0.967; TLI = 0.958; GFI = 0.940, RMSEA = 0.060). Two (economic and environmental responsibility) of the three predictor variables showed a significant impact on trust (except social responsibility), and trust had a significant effect on intention to use m-banking. Therefore, the first two conditions were met. The third condition was tested using Model 2 (the simple direct model). Since Model 2 is saturated, it showed a perfect fit to the data. The model estimation results in Table 4 shows that all three categories of CSR initiatives had a significant effect on the intention to use m-banking. Therefore, the third condition was satisfied. As shown in Table 4, the magnitudes of the predictor variables' path coefficients in Model 1 are smaller than those in Model 2 and all the predictor variables in Model 2 were statistically significant.
Besides, in Model 1 all three predictor variables had a significant path coefficient, but their path coefficients are smaller than those in model 2. These results satisfy the fourth condition. Hence, all four conditions were satisfied, and this ascertains the presence of significant mediating effects of trust.
A further point of interest was whether the mediation was of the "full" or "partial" kind. In order for full mediation to exist, two additional conditions had to be met: (1) the fit of Model 1 should not be better than that of Model 3, and (2) all the path coefficients of the predictor variables to the dependent variable should be statistically insignificant in Model 1 (Andrews et al., 2004). The estimated χ2 statistics for Model 1 and Model 3 were 275.165 (df = 93) and 310.59 (df = 96), respectively. The χ2 difference value of 35.425 for three degrees of freedom was significant (p = 0.00). This suggests that Model 1 fits the data significantly better than Model 3. In addition, all three path coefficients of the predictor variables in Model 1 were significant. Therefore, the trust partially mediated the effects of the CSR activities on the intention to use m-banking.

Conclusions
This study was conducted with the intention of providing further understanding regarding the main factors of CSR that could shape the clients' intention to use of m-banking in Vietnam directly or indirectly through the mediating role of trust.
The structural results indicated that behavioral intention to use m-banking is significantly determined, supported and validated by the concepts of CSR through trust. Among the subjective factors of CSR, economic responsibility is found as a more significant determinant of customer trust than environmental and social responsibility and has no impact on trust. These findings could be explained by the nature of the bank service market. The banking industry is one of the most competitive and economic activities of banks including new job creation, value contributions and investments to the society are the main responsibility of Vietnam Banks. The results also indicated that environmental responsibility also affect to behavioral intention but social responsibility has no impact on trust. This can be attributed that during the past few years, Vietnamese consumers have been facing serious food safety, and health problems due to the environmental crisis. Therefore, banks should incorporate CSR initiatives in their integrated marketing communication strategy, in particular branding strategy, so as to attract more customers.
The statistical results highly proved Trust to be a key factor in predicting behavioral intention with a standardized regression weight of 0.628. In other words, Vietnamese customers seem to be more motivated to adopt m-banking if they trust banks. This can be attributed to in m-banking there are growing many concerns about risk in online banking services because it is operated in an open environment, their applications and outcomes are vulnerable to security and threats such as theft, fraud breaches of personal privacy and attacks by hackers. Theoretically, these results are in parallel with prior studies of m-banking that have tested and approved trust as a crucial factor in determining the customers' intention. For example, Hanafizadeh et al. (2014) conducted a study on m-banking adoption in Iran. K. C. Lee and Chung (2009) used the DeLone and McLean model in their investigation on m-banking adoption and indicated that trust, system quality and information quality were important factors in m-banking adoption in South Korea.

Implications
The results have some important implication for developers, manager to formulating strategies. Firstly, Trust was identified as an important factor that positively affected intention to use m-banking. However, in mobile banking context, building customer trust is very challenging. So, how can m-banking service provider gain customer trust? The current findings suggest that besides using mechanism including long-term service, statement of guarantee for every transaction and digital receipts and enhancing security controls when designing and updating banking apps, CSR initiatives can help to build customer trust and the findings also suggest that customer trust serves as a mediator in the relationship between CSR and intention to use m-banking service. This partial mediation effect of customer trust indicates that consumers' positive perceptions of CSR lead to customer trust and that customer trust, in turn, influences intention to use m-banking. Hence, in order to gain customer trust, doing CSR activities is a critical intermediate step for any banks. Therefore, managers should recognize the influence of CSR on gaining the trust of customers to make them adopt m-banking services. Specially in Vietnam, a country with many environment crises such as Formosa crisis and ThiVai River crisis, any banks focus on environment matter and economic matter it would get a lot of attention of customer, and they can build the reputation and image so that they can build the customer trust which in turn improve the percentage of people to use bank services such as m-banking which has many risks.
Overall, bank managers often face tough choices in allocating company resources and in prioritizing strategic initiatives. This study's findings that CSR contributes to increased intention to use m-banking suggest that managers can obtain substantial benefits by integrating CSR initiatives with other strategies.

Theoretical and practical contribution
The current study contributes to theory within the areas of m-banking and consumer adoption behavior. From a theoretical perspective, the results of this study provide new information related to consumer intention to adopt m-banking that has not been previously examined, to a large extent, in the existing related literature. Thus, this study adds to and expands our knowledge of the most important factors influencing consumer attitudes and behavioral intentions towards adopting m-banking services. In doing so, the current research has applied proven theory and constructs in traditional banking, online banking and m-banking research, and has extended and validated the theoretical relationships between the focal constructs in the research model. In addition, the study makes a strong contribution to the current m-banking literature by examining three dimensional CSRs that affect to trust in the context of m-banking that were not included in previous CSR studies, as a consequence, they may have omitted crucial factors that influence consumer adoption of m-banking services. The results of the present study suggest that Economic Responsibility and Enviromental Responsibility have a positive impact on customer trust in mobile banking services. Therefore, the findings of the present research are particularly noteworthy because this is the first research that proves the link between perceived CSR activities and customer trust in the context of mobile banking services.
The value of research in the area of marketing lies in its ability to be applied in practice. In this sense, the value of this research is that it expands our understanding of m-banking by identifying and synthesizing the most important factors influencing customer adoption of m-banking services in Vietnam. The practical implications of these findings are that they add to the understanding of m-banking from a consumer's behavior perspective and, therefore, act as a valuable base for banks.

Limitation and future research
The current study is restricted by some limitations and can be reported as follows. First, this study concentrated on the customers' intention adoption; yet, customer satisfaction, word-of-mouth, and customer loyalty as a consequence of using m-banking will be valuable directions to be examined in the future researches. Secondly, as the current research is applying the surveybased method, it could be argued that this method is prone to the inherent limitation of measurement errors. However, the measurement errors were reduced, as indicated by the study's good reliability and validity results. Finally, the current study used cross-sectional survey examine customers' adoption of m-banking. Thus, future research is needed to replicate and validate the findings using a longitudinal research which would allow for further examination of m-banking adoption at multiple points of time.