International Journal of Managerial Studies and Research (IJMSR)
Volume 3, Issue 10, October 2015, PP 91-99
ISSN 2349-0330 (Print) & ISSN 2349-0349 (Online)
www.arcjournals.org
©ARC Page | 91
Usages of Multiple Channel to Enjoy Services Conveniently: A
Study on Usage of Multiple Sims by University Students in Sylhet,
Bangladesh
Abdul Latif
Associate Professor & Head
Department of Business Administration
Sylhet International University, Sylhet
Abdullah Al Mamun
Jr.System Engineer. Ranks Telecom Ltd.
Rangstel, Sylhet, Bangladesh
Abstract: The main objective of the study is to explore the factors of multi SIMs usage in the mobile phone at a
time along with users’ demographic characteristics. This descriptive analytical research is carried out by a well
designed questionnaire to collect the data from 100 students of universities of Sylhet city, Bangladesh. The
collected data were duly processed and analyzed by Microsoft Excess 07 and SPSS 19 with the tools of
statistical analysis like frequency distribution, cross tabulation and Chi-square analysis. The findings inferred
that no single operator is successful in providing full satisfaction to the users in all aspects. The operator of
better network is failed to provide satisfaction in cost minimization and value added services and the operator of
cost saving leader failed to provide better satisfaction in network performance and slightly lay behind in value
added services. The multi SIMs users are mostly satisfied in initial cost to install multi SIM due to low price of
SIMs but keep customers indifferent in cost minimization in call and SMS and value added services. The
operators are failed to provide satisfaction to most of the users in customer care. The multi SIM users have
perception in saving an amount of cost by their activity. The intention to switch to other operators may remind
the management in emphasizing on promotional activity and customer care simultaneously.
Keywords: SIM Cards, Cell Phone, Satisfaction, Switch over, University Students.
1. INTRODUCTION
Mobile Phone operators are providing service to the subscribers to be connected to each other in most
dynamic ways. This intangible product is to provide benefits to consumers by involving human and
mechanical efforts (Skinner 1998). Technology is used to provide services in more accessible,
convenient and productive ways (Zeithaml, Bitner, Gremler and Pandit, 2011). It enables employees
in providing and customers in getting services more effectively (Bitner, Brown & Meuter, 2000). By
analyzing the gap model of services, the provider gap is to be analyzed to clarify the study. The four
important provider gaps (Zeithaml, Bitner, Gremler and Pandit, 2011) is important in the innovation
company to understand it properly (listening gap), difficulty in translating the perceived expectation
in service design (Service Design and Standard gap), failure in providing backing by people, system
and technology to provide service ( service performance gap) and failure in getting proper feedback
(Communication gap). The explicit service promises by different providers increases the expectation
of the subscribers to get uninterrupted and less costly services from multiple providers at a time.
Further the perception on five dimensions of service quality; reliability, assurance, empathy,
responsiveness and tangibles (Zeithaml, Bitner, Gremler and Pandit, 2011) could not be satisfied by a
single operators or a single package of an operator in any time. The cellular phone industry of
Bangladesh has a tremendous growth of 70% in 20 years (Rokonuzzaman 2015) with a revenue of $3
billion equivalent to 2.5% of GDP (Rokonuzzaman 2015) in a land of 32.5% population with less
than $2 income daily (World Bank 2010). Only 11% are using internet through 3G or high speed
internet leaving a great potential of growth in data usage (Rahman M.F., 2015). The players of mobile
Abdul Latif & Abdullah Al Mamun
International Journal of Managerial Studies and Research (IJMSR) Page | 92
phone operators industry are Grammenphone, Banglalink, Robi, Airtel, Teletalk and Citicell. The key
player Grammenphone has the largest market share (2014) with 52 million of subscribers
(www.grameenphone.com), Banglalink has present market share (2014) of 25.47% with 30.9 million
subscribers (http://www.banglalink.com.bd) Robi has a 25.61 million subscriber (2014) in Bangladesh
with 22.35% market share (http://www.btrc.gov.bd; www.robi.com.bd), Airtell has a present market
share (2014) of 7.20% with 8.61 million subscribers. ((http://www.btrc.gov.bd.; www.bd.airtel.com),
Teletalk has a present market share (2014) of 2.60% with 2.980 million subscribers
((http://www.btrc.gov.bd; www.teletalk.com.bd) and Citicell has 1.380 million subscribers (2014) and
1.20% market share at present ((http://www.btrc.gov.bd; www.citycell.com). All the operators are in
stiff competition to attract and restore their subscribers by various price and non-price competitions.
So the need of physical evidence in mobile phones with the scope of using multiple SIMs at a time is
identified and properly implemented to provide subscribers with the facilities of using multiple
services at a time. By using the multiple channels they are actually using multiple channels
of services to get uninterrupted mobile connection in minimum costs.
2. LITERATURE REVIEW
Mobile phone operators are providing services with the seven key elements of services; product,
price, place, promotion, process, physical evidence and people (Lovelock, Wirtz and Chatterjee,
2011). In mobile phone service, three elements of services; core product, supplementary services and
delivery process are required highly by the customers.
Mobile telecommunication became the most dominant in service sector of Bangladesh in recent years
with its increasing network coverage (Upal 2008). Existing six operators are providing competitive
services to their subscribers to exploit the prospective opportunities. In this situation it is very tough
for any subscriber to select the most appropriate operators because of the opportunity cost of services
of other operators (Hemmati et al., 2012). Besides stiff competition, the advancement of technology,
reduced tariff and falling mobile set price increases the expectation of subscribers (Shah 2012). The
operators are providing attractive call rates, packages and value added services with their key services
packages offered and communicated by the operators (Simsim 2009). Hasan et. al. (2013) added
network coverage and faster internet with the lowest call rate are the main attraction of subscribers.
Kumar et. al. (2011) mentioned the service quality as the main attraction of customers. It is also
found that timely, accurate and dependable services is in the priority list of customers (Khan 2010).
By the rapidly advancing technology mobile operators with the help of manufacturers are providing
nder them to
get satisfaction from single operator as customers satisfaction is the comparison of perceived
performance with expectation (Kotler 2006; Olshavsky, 1985). The success and failure of any
enterprise may be described by the difference between perceived performance and expectation. The
positive result indicates the success and the negative result indicates failure (Anderson T W and
Olsen, 2008). Such situation brings more pressure to the operators as the customers may switch to
other operator any time by get better perceived services from them or felt the deprivation as they
cannot able to enjoy/test the services of other operators. This may increase the expectation of
customers on specific operator. To relief the operator from meeting the ever ending expectations, the
innovation of multiple SIMs in one set can contribute more to satisfy the customers and employees of
operators at a time. Mobile phones with Dual SIM was introduced in Bangladesh on 2013. Nokia,
Samsung, Symphony and others introduced dual SIMs mobile phone in Bangladesh. Now most of the
sets has dual SIM facilities. Some sets has more them two SIMs facilities. This research is to explore
the factors of using multi SIMs mobile phones at a time. The using features of mobile phones by the
customers and attitude of analyzing different offers of different companies are to be analyzed to get
the objectives of the study be served.
3. OBJECTIVES OF THE RESEARCH
The broad objective of the research is to identify the factors for using multiple SIM card by university
students in Sylhet.
In the search of achieving the broad objective, the research will also address the following specific
objectives:
Usages of Multiple Channel to Enjoy Services Conveniently: A Study on Usage of Multiple Sims by
University Students in Sylhet, Bangladesh
International Journal of Managerial Studies and Research (IJMSR) Page | 93
To identify the demographic characteristics of the students who are using multiple SIM
To identify the ranking of operators in providing different services.
To identify the satisfaction level of multi SIMs users of university students on different factors of
mobile services.
To examine the perception of cost saving by using multiple SIMs at a time.
To predict the future action of operator in case of switching to other operator/s.
4. RESEARCH METHODOLOGY
Research Design
The research is to study identification and exploration of the factors for using multiple SIM cards for
students of university of sylhet city. So this research can be categorized in descriptive empirical
research.
Sampling Design
The sampling design covers target population, sampling frame & sampling technique. These are
presented below:
Target population
Elements: Male or female student of Public and Private University students of Sylhet.
Sampling Units: Students
Extent: Sylhet Sadar
Time: 2014
Sampling Technique
The stratified probability sampling is used to cover the opinions of different gender, level, and type of
university.
Data Collection
Both primary and secondary sources are used for the research purpose. Focus Group Discussion
(FGD) is conducted to pull together basic factors for using multiple SIM cards. Then primary data for
the research are collected through questionnaire survey. The questionnaires are administered through
personal interview. The secondary data are collected from different journals, books, articles and
Companies web sites and to describe current condition of Bangladeshi cellular phone industry of
Bangladesh.
Data Analysis
This research includes analysis of using Multiple SIM cards. So the data collected by means of face to
face interview through the structured questionnaire have been screened and coded. Findings will be
presented using simple tables, frequency distribution, cross tabulation, utilizing MS Excel-2007 as
well as the SPSS 19 for the data processing.
5. FINDING OF THE RESEARCH
To study the respondents profile who are using multiple SIM, it is important to study the prime
reasons of using cell phone by the university students, the number of SIM they are using and the
reasons for using multiple SIM by the same user. This is demonstrated in Table 1. It is true that a cell
phone serves many purposes. Among them to communicate with others is most important. University
students have to communicate with many persons. But the main reason for using mobile phone is to
communicate with a prime person. Among the reasons; communicate for business purpose, with
friends, with family members, for status symbol and other reasons are important. It is found that, 43
percent of students said that they use mobile phone to communicate with their family members. It is
followed by 26 percent students who are using mobile phone for Communication with friends. Along
with these reasons 13 percent students states that mobile phone gives them some sort of status and
mobile phone other than communication purposes.
Abdul Latif & Abdullah Al Mamun
International Journal of Managerial Studies and Research (IJMSR) Page | 94
To exploit the opportunities and offers given by different operators, users prefer to use multiple SIM
instead of single operator. Among the respondents users of dual SIM cards are in leading position
(46%) that is followed by triple SIM users (41%) and single SIM users (13%). Now most of the
mobile phone has options of using dual SIM. So respondents prefer to utilize the given opportunity in
a set.
By studying the reasons for using multi SIM, it is found that utilizing lucrative offers by different
operators in minimum call charge attracts most of the users in using multi SIM in their set/s (51%).
Lower call charges includes call charges for same operator to operator, call charge for FnF (friends
and family) numbers, free talk time, call charges in peck off-pick and supper off pick hours. Here it is
need to mention that all the operators offer relatively lower call charges within the same operator.
Peck, off-pick hours also varied from operator to operator. So, to consume maximum benefit from
espondents use multiple SIM cards. That is followed by the users who prefer to
get better network performance by multi operators (39%) and the rest 10% are emphasizing the lower
initial cost in using multiple SIMs.
Table1. Distribution of respondents by Number of SIM card holding and the Reasons of Use
Reasons for Using Cell Phone
Number of SIM
Reasons for Using Multi-SIM
Reason
Frequency
Percent
Number
Frequency
Percent
Reasons
Frequency
Percent
Business
1
1.0
Three
41
41.0
Initial Cost
10
10.0
Friends
26
26.0
two
46
46.0
Call Charge
51
51.0
family
43
43.0
One
13
13.0
Network
Performance
39
39.0
Status
13
13.0
Total
100
100.0
Total
100
100.0
Other
17
17.0
Total
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
The demographic profiles of the respondents can be studied to identify the using patterns of multiple
SIMs by them. The ages and gender of users are mentioned in Table 2 with Chi-square analysis to
find out the significant difference of users age and genders.
Table2. Distribution of respondents by Age and Gender
Age
Using_multiple_SIM
Total
Gender
Using_multiple_
SIM
Yes
No
Yes
No
below 18
4
4
8
Male
57
3
60
50.0%
50.0%
100.0%
95.0%
5.0%
100.0%
18-23 years
35
6
41
female
30
10
40
85.4%
14.6%
100.0%
75.0%
25.0%
100.0%
23-28 years
34
2
36
94.4%
5.6%
100.0%
28-33 years
11
1
12
91.7%
8.3%
100.0%
Above 33 years
3
0
3
100.0%
.0%
100.0%
Total
87
13
100
Total
87
13
100
87.0%
13.0%
100.0%
87.0%
13.0%
100.0%
Chi-Square
Value
df
Asymp. Sig.
(2-sided)
Chi-Square
Value
df
Asymp. Sig.
(2-sided)
Linear-by-Linear
Association
6.730
1
.009
Linear-by-Linear
Association
8.403
1
.004
Source: SPSS output from the survey conducted on August-December, 2014
Importance of communication increased with the age levels as higher age indicate more liabilities than
the lower age. The network of communication is increased more with the increase in age levels. So it
is found that people of higher age are using multiple SIMs more than the people of lower ages, The
Chi-square test verifies the significant difference in uses of multiple SIMs with the increase in age of
users. .Among sixty male respondents ninety five percent and seventy five percent are female students
of total 40 are using multiple SIMs. The Chi-square test established a significant difference between
Usages of Multiple Channel to Enjoy Services Conveniently: A Study on Usage of Multiple Sims by
University Students in Sylhet, Bangladesh
International Journal of Managerial Studies and Research (IJMSR) Page | 95
male and female respondents in using Multiple SIMs. The male respondents are leading position than
females in this respect.
It is also important to study the level of education of the respondents and the type of university to
know whether there are any significant difference exists in using the multiple SIMs by them. Table 2
illustrates the respondents education level and type of university in respect of multiple SIMs usage.
Table3. Distribution of respondents by Educational level and Type of University
level
Using_multiple_SIM
Total
Type of
University
Using_multiple_
SIM
Total
Yes
No
Yes
No
Undergraduate
35
10
45
77.8%
22.2%
100.0%
Graduate
44
3
47
Private
46
4
50
93.6%
6.4%
100.0%
92.0%
8.0%
100.0%
Other
8
0
8
Public
41
9
50
100.0%
.0%
100.0%
82.0%
18.0%
100.0%
Total
87
13
100
Total
87
13
100
87.0%
13.0%
100.0%
87.0%
13.0%
100.0%
Chi-Square Tests
Value
df
Asymp. Sig.
(2-sided)
Chi-Square
Tests
Value
df
Asymp. Sig.
(2-sided)
Linear-by-Linear
Association
5.998
1
.014
Linear-by-
Linear
Association
2.188
1
.139
Source: SPSS output from the survey conducted on August-December, 2014
It is found that 77.8% of undergraduate students and 93.6% of graduate students are using multiple
SIMs to fulfill their necessity to communicating with more persons by minimum costs and with better
network performance. The Chi-Square test proved that there are significant difference in using
multiple SIMs by the students of different level of education.
But the difference between students of public and private universities is not significant in respect of
multi-SIMs usage as proved by the Chi-Square test (.139>.05). Ninety two percent students of private
universities and eighty two percent of public university are using multi-SIMs.
Selection of multi operators depends on the ranking of them on the basis of their services in network,
cost, SMS/MMS, more offers, internet/social media, Value added services and more FnF
opportunities. These are illustrated by Table 4 and Table 5 respectively.
Table4. Distribution of respondents by Preferred for good networking, cost saving, SMS/MMS facility and more
offers of Multi-SIM
Operator
Good Network
Cost Saving
SMS/MMS
More Offers
Frequency
Percent
Frequency
Percent
Frequency
Percent
Frequency
Percent
GP
39
39.0
5
5.0
3
3.0
3
3.0
Robi
23
23.0
18
18.0
8
8.0
18
18.0
Banglalink
21
21.0
45
45.0
29
29.0
39
39.0
Airtel
13
13.0
31
31.0
28
28.0
26
26.0
Teletalk
4
4.0
0
0.0
29
29.0
13
13.0
Citicell
0
0.0
1
1.0
3
3.0
1
1.0
Total
100
100.0
100
100.0
100
100.0
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
It is found that for better network services users prefer GP most. It is followed by Robi and
Banglalink. For cost saving and more offers, Banglalink is the most favorite. It is followed by Airtel
and Robi and for SMS/MMS facilities Banglalink, Teletalk and Airtel are favored by the users almost
equally. So in ranking in respect of network GP is staying at first position but in other respect like cost
savers, SMS/MMS and more offers Banglalink is in leading position among the operators.
It is also found that, in respect of internet/social media and more FnF facilities Banglalink is most
preferred by the respondents. But in value added services Airtell is abit advanced from Banglalink and
Robi.
Abdul Latif & Abdullah Al Mamun
International Journal of Managerial Studies and Research (IJMSR) Page | 96
Table5. Distribution of respondents by Preferred for FNF of Multi-SIM use
Operator
Net/Social Media
More FnF
Better VAS
Frequency
Percent
Frequency
Percent
Frequency
Percent
GP
9
9.0
0
0.0
4
4.0
Robi
21
21.0
21
21.0
27
27.0
Banglalink
27
27.0
43
43.0
27
27.0
Airtel
21
21.0
34
34.0
29
29.0
Teletalk
21
21.0
2
2.0
13
13.0
CityCell
1
1.0
0
0.0
0
0.0
Total
100
100.0
100
100.0
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
The satisfaction level is examined on different operators in respect of initial cost of installing, call
charge, network facilities, SMS/MMS, customer care and value added services.
Table6. Multi SIM Users’ Satisfaction level on different items
Initial Cost
Call Charge
Network
Level
Frequency
Percent
Frequency
Percent
Frequency
Percent
Very Satisfied
61
61.0
30
30.0
4
4.0
Satisfied
30
30.0
35
35.0
25
25.0
Indifferent
9
9.0
29
29.0
53
53.0
Dissatisfied
0
0.0
6
6.0
18
18.0
Very
Dissatisfied
0
0.0
0
0.0
0
0.0
Total
100
100.0
100
100.0
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
It is found that by using multi SIMs, users are very satisfied on initial minimum cost to install (61%),
by minimizing the call charge, 35% are satisfied. But greater portion of users are found indifferent in
network performance (53%), in SMS/MMS service (53%), in customer care (28%) and in value added
services (50%). It is also found from interview that customers are indifferent in VAS by using multi
SIM because of the charges on every item of it. A smaller portion is found dissatisfied or mostly
dissatisfied by using multi SIMs on almost all the factors but on customer care. A total of 43% is
found dissatisfied or mostly dissatisfied on customer care of multi operators.
Table7. Level of Satisfaction by Multi SIM users in SMS/MMS, Customer Care and Value Added Services (VAS)
SMS/MMS
Customer Care
Value Added Services
Level
Frequency
Percent
Frequency
Percent
Frequency
Percent
Very Satisfied
3
3.0
7
7.0
6
6.0
Satisfied
27
27.0
22
22.0
24
24.0
Indifferent
55
55.0
28
28.0
50
50.0
Dissatisfied
15
15.0
19
19.0
12
12.0
Very Dissatisfied
0
0.0
24
24.0
8
8.0
Total
100
100.0
100
100.0
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
It was found earlier that most important reason of using multi SIMs is to minimize the calling charge
of mobile phone by using competitive class charge and different offers. The perception of saving the
call charge by using multi SIMs in a month is given in Table 8.
Table8. Perception of Saving Phone Bill Monthly by Using Multi-SIM
Amount
Frequency
Percent
200-600
49
49.0
600-1000
40
40.0
Above 1000
11
11.0
Total
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
It is found that most of the users have a perception of saving the monthly mobile bill by using multi
SIMs fall in TK. 200-600 category. It is followed by 40% of the users who are in the range of Tk.
Usages of Multiple Channel to Enjoy Services Conveniently: A Study on Usage of Multiple Sims by
University Students in Sylhet, Bangladesh
International Journal of Managerial Studies and Research (IJMSR) Page | 97
600-1000 per month. Only 11% have the perception of saving more than 100 per month by using
multi SIMs. It is inferred that most of the users in university level have monthly bill of mobile phone
in the range of Tk. 500-2000.
Choice of users in future in case of switching is the reflection of their perception regarding the
benefits of the operator. The choice of users are illustrated on Table 9.
Table9. Operator to select in Future if they switch
Operator
Frequency
Percent
GP
2
2.0
Robi
5
5.0
Banglalink
26
26.0
Airtel
40
40.0
Teletalk
17
17.0
CityCell
6
6.0
No
4
4.0
Total
100
100.0
Source: SPSS output from the survey conducted on August-December, 2014
The choice of users to use the operator in future is dominated by Airtell (40%). This is followed by
Banglalink (26%) and Teletalk (17%). The researchers came to know from the supplementary
interview with the users that from the advertisement on different offers they have built this perception
of benefits of the operator. The least popularity of operator lies to GP (2%), Robi (5%) and Citycel
(6%). That is because most of the users are using GP and Robi. Citycell has less popularity because of
the operation by RIM instead of SIM. There is no option to use that operator in a single set with other
operator. This is not indication of popularity as this is the option of next switch over from one to
another.
6. OVERALL DISCUSSION
To minimize the monthly bill on mobile phone is found as the main reason of using multi SIMs along
with the getting better network performance to communicate with family members, friends and others
without any disrupts (Table 1). The demand of multi SIMs increased with the spread of network of
any person. Naturally the senior persons and males have wide network to communicate than juniors
and females, so they are found in using multi SIMs more than their counterparts (Table 2). Similarly
the graduate level students are using more than the undergraduates but there are no difference between
the students of public and private universities as there are no difference in width of network in type of
universitys (Table 3). Preference on operator in respect of network, cost, internet and value added
services, it is found that Grameen Phone is preferred most for its network but Banglalink is preferred
for cost saving by call rate, more offers, SMS/MMS and FnF facilities. Banglalink is also preferred by
users due to its internet and social media facilities and in slight behind than Airtell in value added
services (Table 4 & 5). Satisfaction level by using multi SIMs proved that in initial cost to install
multi SIMs and call charge most of the users are satisfied or most satisfied. But in SMS/MMS and
value added service most of the users showed their indifference in using multi SIMs. Customer care of
different operators are failed to bring satisfaction to most of the users as they expressed their
dissatisfaction or most dissatisfaction on this factor (Table 6 & 7). The users have perception in
saving mothly bill by using multi SIM in a significant amount (Table 8). The opinion of users in case
of switching expressed their opinion of testing other operators by installing (Table 9). There opinion
may be influenced by the promotional activities of the operators and word of mouth program. So,
promotional activities with better services should be in the priority list of operators in the competitive
environment of Bangladesh.
7. CONCLUSION
Service is rendered in channels and every channel has some limitation along with facilities. So the
users prefer multi channel to consume the services of different channels. Multi SIM facilities in a
single set brings the facility to the users to use different operators at a time. Identification and
exploration of factors of multi SIM users showed indifference of users on different factors and
intention to switch to other unused operators being influenced by their promotional activities. So the
competitors of mobile phone operation should improve their services and intensify promotional
activities competitively to be in better position in the race.
Abdul Latif & Abdullah Al Mamun
International Journal of Managerial Studies and Research (IJMSR) Page | 98
8. MANAGERIAL IMPLICATION
Using the study, operators should give proper attention in their limitation as it is found that users need
to communicate in their network according to their level. Users ranking of different operators on
different factors proved that no operator is in leading position in all aspect. So the operator with good
network should emphasize of cost and other services. The leading operator in cost savings should
provide better network and the operator with better value added services should emphasize on cost
saving of users and better network performance. The satisfaction level on initial cost to install other
operator by paying a small amount of SIM paves the way to the users to check other channel at a same
time. So, the operators should emphasize on different factors to stay in the race of stiff competition in
a land of 160 million population. The expression of users intention regarding to switch to other
operator reminds the operators to improve their services more competitively. The customer care units
of different operators are not in optimum level. So, the entire operator should emphasize more on
those factors.
9. LIMITATION
This study cannot be generalized because of sampling frame to only university students of Sylhet,
Bangladesh. The sample size also suffers from that limitation. The factors of the study are not so wide
to pinpoint the problem and prospect of mobile phone operators of Bangladesh.
10. FURTHER STUDY
By removing the limitation of the study, further research can be conducted to generalize the findings.
The sample size and sampling frame can be widen and factors of study may be increased more to do
more study in the field. The comparison of cost of single and multiple SIM users can be studied with
the other facilities.
REFERENCES
[1] ‟ Expectations From Mobile Telecommunication Operators:
D.U. Journal of Marketing, Vol. No. 15, June.
[2] Airtel (2014). About Airtel Bangladesh, Accessed through <http://www.bd.airtel.com/
commonpage.php?cat_id=165>, Accessed on September 19, 2014.
[3] Banglalink (2014). About Banglalink, Accessed through <http://www.banglalink.com.bd
/en/about_banglalink>, Accessed on November 11, 2014.
[4]
Journal of The Academy of Marketing Science, 28, winter, pp 138-149.
[5]
Regulatory Commission, April 2014, Accessed through: <http://www.btrc.gov.bd/content/mobile
-phone-subscribers-bangladesh-april-2014>, Accessed on: June 12, 2014.
[6] Citycell (2014). Company Profile, Accessed through <http://www.citycell.com/ index.php/about
/company_profile>, Accessed on June 12, 2014.
[7] Grameenphone (2014). corporate-information, Accessed through <http://www.grameenphone.
com/about-us/corporate-information>, Accessed on July 9, 2014.
[8]
Journal of Economics and Sustainable
Development, Vol.4, No.2.
[9]
Operators by AnalytiTelecommunications System & Management,
JTSM, an open access journal, Volume 2, Issue 1.
[10]
Asian Social Science, Vol. 6, No. 10 October.
[11]
International
Journal of Management & Business Studies, Vol. 1, Issue 3, September.
[12]
April 12, 2015. Retrieved from http://www.thedailystar.net
Usages of Multiple Channel to Enjoy Services Conveniently: A Study on Usage of Multiple Sims by
University Students in Sylhet, Bangladesh
International Journal of Managerial Studies and Research (IJMSR) Page | 99
[13] Robi (2014). Company Profile. Accessed through <http://www.robi.com.bd/en/corporate/
company-profile>, Accessed on November 21, 2014.
[14] Rokonuzzaman M. (2015), Challenges and Policy Impediments, The Daily Star, June 4, 2015,
Accessed through http://www.thedailystar.net/op-ed/challenges-and-policy-impediments-90484
on Sep 28, 2015.
[15] World Academy of
Science, Engineering and Technology, Vol. 58, October, pp.432-435.
[16]
International Journal of Marketing and Technology (IJMT). Vol. 2,
Issue 8, August.
[17] Skinner S. J. (1998), Marketing 2
nd
edn. Houston Miffin Company p-348.
[18] Teletalk (2014). Company Overview. Accessed through <http://www.teletalk.com.bd/>,
Accessed on December 18, 2014.
[19]
Sat Publication of the International Business Information Management Association
(IBIMA). Volume 3.
[20] World Bank (2010), Annual Report, Accessed through
Annual Report on Sep 28, 2015.
[21] Zeithaml V.A., Bitner M.J., Gremler D.D. and Pandit A., (2011), Service Marketing- Integrating
Customer Focus across the Firm, 5
th
Edn. New Delhi: Tata McGraw Hill Education Private
Limited.
