or freedom to laugh and talk… or they will start using each other for self-esteem instead of for relationships. And when we use each other for self-esteem, we are really just picking and choosing in each other the things we find useful, compatible. After a while, they will gradually separate to find better relationships that can help them satisfy their spirit and suit their needs.
2.1.3. Research questions
Question 1: What is the current status of mobile phone usage among students at Ho Chi Minh City Open University?
Second question: Does students' use of mobile phones increase or decrease their social relationships with people around them (family, friends, relatives, groups, communities and people in public places...)?
Third question: Does using smartphones for entertainment ( listening to music, watching movies, playing games, social networking...) reduce the level of direct interaction between students and their families, friends, relatives, groups, communities and people in public places...?
2.1.4. Research hypothesis
Hypothesis 1: Currently, most students use mobile phones for various purposes and the level of use is related to personal and family characteristics.
Second hypothesis: The use of mobile phones significantly affects students' social relationships, specifically increasing and expanding indirect social interactions, but reducing direct social interactions and possibly reducing relationships with relatives, family, friends, etc.
Third hypothesis: Using smartphones for entertainment ( listening to music, watching movies, playing games, social networking...) reduces students' direct interaction and thus negatively affects social relationships with family, friends, relatives, groups, communities and people in public places...
2.1.5. Analytical framework
PERSONAL AND FAMILY CHARACTERISTICS
Gender, major, year of study, hometown, place of residence, family economy
Mobile phone function
USING CELL PHONES
- Reason for use
- Purpose of use
- Usage scenarios
- Time of use
SOCIAL RELATIONSHIPS
DIRECT COMMUNICATION
- Family
- Friend
- Teachers
- Other social groups
INDIRECT COMMUNICATION
- Family
- Friend
- Teachers
- Other social groups
Variables
Dependent variable : Student social relationships. This variable is deployed on three specific aspects: family relationships (parents, siblings, relatives, loved ones), personal relationships (friends, teachers), social group relationships (community, organization, service, social network groups) created through communication including direct (meeting) and indirect (mobile phone, email, social network, texting).
Intervention variables: Student and family personal factors (gender, hometown, year of study, place of residence, major, family economy)
Chapter 2 Summary
In short, the topic of e-commerce is one of the topics that has been studied for a long time. Since then, the data from those large-scale studies have become reliable information pages for the author to refer to and use in the process of writing the thesis. Therefore, through an overview of the research situation, the author has gradually delved into the theoretical foundations, basic concepts and operationalized related concepts such as: the concept of e-commerce, social relations. In addition, for the research topic on the impact of using e-commerce on students' social relations, many theories can be applied, however, the author only uses, analyzes and applies the main theory, which is Social Exchange Theory, thereby partly explaining the problems of the topic.
Chapter 3
THE CURRENT STATE OF SMARTPHONE USE BY STUDENTS AT HO CHI MINH CITY OPEN UNIVERSITY
With the development and spread of digital technology, it has become familiar and changed some aspects of life, bringing many new experiences to people. And with the current flow of technology, the smarter the product, the more utilities it has, the more dominant it is [32]. Therefore, it is impossible not to mention smartphones - a highly personalized tool, easy to connect to the Internet, flexible and can be used continuously almost anytime, anywhere. Therefore, the demand for using smartphones of students is very diverse and rich. In a completely open environment, unlike the environment in general, students are no longer limited to the family and school environment but also participate in social networks through friends, groups, communities... through other types of media and especially through smartphones - the most popular media today [35].
3.1. The role of e-commerce and students' need to use e-commerce
In this section, the author will discuss the role of mobile phones in students' social relationships, find out the reasons and purposes for which students use mobile phones to carefully consider whether mobile phones are an important means for most students in their daily lives. At the same time, it will help us see how students' use of mobile phones affects their social relationships.
3.1.1. Student assessment of the role of e-commerce
With the increasing role of modern technology in life, smartphones are not only becoming more and more popular but also providing students with a series of new capabilities in all areas such as: exchanging information, studying, entertaining and connecting with family, friends, relatives ... anytime, anywhere. Because of these conveniences, when asked, most students said that smartphones are necessary, specifically as follows:
Table 3.1. Students' assessment of the importance of e-commerce
divided by gender
The role of mobile phones in life
Male | Female | Total | ||
Completely unnecessary | Quantity | 5 | 1 | 6 |
% of total | 3.1 | 0.6 | 3.8 | |
Less necessary | Quantity | 5 | 8 | 13 |
% of total | 3.1 | 5.0 | 8.1 | |
Necessary | Quantity | 34 | 31 | 65 |
% of total | 21.2 | 19.4 | 40.6 | |
Absolutely necessary | Quantity | 25 | 28 | 53 |
% of total | 15.6 | 17.5 | 33.1 | |
Very necessary | Quantity | 11 | 12 | 23 |
% of total | 6.9 | 7.5 | 14.4 | |
Total | Quantity | 80 | 80 | 160 |
% total | 50.0 | 50.0 | 100.0 |
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Mobile Phone Usage in Hanoi Inner City Area
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- Test the relationship between demographic variables and consumer behavior for Mobile Marketing activities
The analysis method used is the Chi-square test (χ2), with statistical hypotheses H0 and H1 and significance level α = 0.05. In case the P index (p-value) or Sig. index in SPSS has a value less than or equal to the significance level α, the hypothesis H0 is rejected and vice versa. With this testing procedure, the study can evaluate the difference in behavioral trends between demographic groups.
CHAPTER 4
RESEARCH RESULTS
During two months, 1,100 survey questionnaires were distributed to mobile phone users in the inner city of Hanoi using various methods such as direct interviews, sending via email or using questionnaires designed on the Internet. At the end of the survey, after checking and eliminating erroneous questionnaires, the study collected 858 complete questionnaires, equivalent to a rate of about 78%. In addition, the research subjects of the thesis are only people who are using mobile phones, so people who do not use mobile phones are not within the scope of the thesis, therefore, the questionnaires with the option of not using mobile phones were excluded from the scope of analysis. The number of suitable survey questionnaires included in the statistical analysis was 835.
4.1 Demographic characteristics of the sample
The structure of the survey sample is divided and statistically analyzed according to criteria such as gender, age, occupation, education level and personal income. (Detailed statistical table in Appendix 6)
- Gender structure: Of the 835 completed questionnaires, 49.8% of respondents were male, equivalent to 416 people, and 50.2% were female, equivalent to 419 people. The survey results of the study are completely consistent with the gender ratio in the population structure of Vietnam in general and Hanoi in particular (Male/Female: 49/51).
- Age structure: 36.6% of respondents are <23 years old, equivalent to 306 people. People from 23-34 years old
accounting for the highest proportion: 44.8% equivalent to 374 people, people aged 35-45 and >45 are 70 and 85 people equivalent to 8.4% and 10.2% respectively. Looking at the results of this survey, we can see that the young people - youth account for a large proportion of the total number of people participating in the survey. Meanwhile, the middle-aged people including two age groups of 35 - 45 and >45 have a low rate of participation in the survey. This is completely consistent with the reality when Mobile Marketing is identified as a Marketing service aimed at young people (people under 35 years old).
- Structure by educational level: among 835 valid responses, 541 respondents had university degrees, accounting for the highest proportion of ~ 75%, 102 had secondary school degrees, ~ 13.1%, and 93 had post-graduate degrees, ~ 11.9%.
- Occupational structure: office workers and civil servants are the group with the highest rate of participation with 39.4%, followed by students with 36.6%. Self-employed people account for 12%, retired housewives are 7.8% and other occupational groups account for 4.2%. The survey results show that the student group has the same rate as the group aged <23 at 36.6%. This shows the accuracy of the survey data. In addition, the survey results distributed by occupational criteria have a rate almost similar to the sample division rate in chapter 3. Therefore, it can be concluded that the survey data is suitable for use in analysis activities.
- Income structure: the group with income from 3 to 5 million has the highest rate with 39% of the total number of respondents. This is consistent with the income structure of Hanoi people and corresponds to the average income of the group of civil servants and office workers. Those
People with no income account for 23%, income under 3 million VND accounts for 13% and income over 5 million VND accounts for 25%.
4.2 Mobile phone usage in Hanoi inner city area
According to the survey results, most respondents said they had used the phone for more than 1 year, specifically: 68.4% used mobile phones from 4 to 10 years, 23.2% used from 1 to 3 years, 7.8% used for more than 10 years. Those who used mobile phones for less than 1 year accounted for only a very small proportion of ~ 0.6%. (Table 4.1)
Table 4.1: Time spent using mobile phones
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Alid
<1 year
5
.6
.6
.6
1-3 years
194
23.2
23.2
23.8
4-10 years
571
68.4
68.4
92.2
>10 years
65
7.8
7.8
100.0
Total
835
100.0
100.0
The survey indexes on the time of using mobile phones of consumers in the inner city of Hanoi are very impressive for a developing country like Vietnam and also prove that Vietnamese consumers have a lot of experience using this high-tech device. Moreover, with the majority of consumers surveyed having a relatively long time of use (4-10 years), it partly proves that mobile phones have become an important and essential item in people's daily lives.
When asked about the mobile phone network they are using, 31% of respondents said they are using the network of Vietel company, 29% use the network of
of Mobifone company, 27% use Vinaphone company's network and 13% use networks of other providers such as E-VN telecom, S-fone, Beeline, Vietnammobile. (Figure 4.1).
Figure 4.1: Mobile phone network in use
Compared with the announced market share of mobile telecommunications service providers in Vietnam (Vietel: 36%, Mobifone: 29%, Vinaphone: 28%, the remaining networks: 7%), we see that the survey results do not have many differences. However, the statistics show that there is a difference in the market share of other networks because the Hanoi market is one of the two main markets of small networks, so their market share in this area will certainly be higher than that of the whole country.
According to a report by NielsenMobile (2009) [8], the number of prepaid mobile phone subscribers in Hanoi accounts for 95% of the total number of subscribers, however, the results of this survey show that the percentage of prepaid subscribers has decreased by more than 20%, only at 70.8%. On the contrary, the number of postpaid subscribers tends to increase from 5% in 2009 to 19.2%. Those who are simultaneously using both types of subscriptions account for 10%. (Table 4.2).
Table 4.2: Types of mobile phone subscribers
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Prepay
591
70.8
70.8
70.8
Pay later
160
19.2
19.2
89.9
Both of the above
84
10.1
10.1
100.0
Total
835
100.0
100.0
The above figures show the change in the psychology and consumption habits of Vietnamese consumers towards mobile telecommunications services, when the use of prepaid subscriptions and junk SIMs is replaced by the use of two types of subscriptions for different purposes and needs or switching to postpaid subscriptions to enjoy better customer care services.
In addition, the majority of respondents have an average spending level for mobile phone services from 100 to 300 thousand VND (406 ~ 48.6% of total respondents). The high spending level (> 500 thousand VND) is the spending level with the lowest number of people with only 8.4%, on the contrary, the low spending level (under 100 thousand VND) accounts for the second highest proportion among the groups of respondents with 25.4%. People with low spending levels mainly fall into the group of students and retirees/housewives - those who have little need to use or mainly use promotional SIM cards. (Table 4.3).
Table 4.3: Spending on mobile phone charges
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<100,000
212
25.4
25.4
25.4
100-300,000
406
48.6
48.6
74.0
300,000-500,000
147
17.6
17.6
91.6
>500,000
70
8.4
8.4
100.0
Total
835
100.0
100.0
The statistics in Table 4.3 are similar to the percentages in the NielsenMobile survey results (2009) with 73% of mobile phone users having medium spending levels and only 13% having high spending levels.
The survey results also showed that up to 31% ~ nearly one-third of respondents said they sent more than 10 SMS messages/day, meaning that on average they sent 1 SMS message for every working hour. Those with an average SMS message volume (from 3 to 10 messages/day) accounted for 51.1% and those with a low SMS message volume (less than 3 messages/day) accounted for 17%. (Table 4.4)
Table 4.4: Number of SMS messages sent per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
142
17.0
17.0
17.0
3-10 news
427
51.1
51.1
68.1
>10 news
266
31.9
31.9
100.0
Total
835
100.0
100.0
Similar to sending messages, those with an average message receiving rate (from 3-10 messages/day) accounted for the highest percentage of ~ 55%, followed by those with a high number of messages (over 10 messages/day) ~ 24% and those with a low number of messages received daily (under 3 messages/day) remained at the bottom with 21%. (Table 4.5)
Table 4.5: Number of SMS messages received per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
175
21.0
21.0
21.0
3-10 news
436
55.0
55.0
76.0
>10 news
197
24.0
24.0
100.0
Total
835
100.0
100.0
When comparing the data of the two result tables 4.4 and 4.5, we can see the reasonableness between the ratio of the number of messages sent and the number of messages received daily by the interview participants.
4.3 Current status of SMS advertising and Mobile Marketing
According to the interview results, in the 3 months from the time of the survey and before, 94% of respondents, equivalent to 785 people, said they received advertising messages, while only a very small percentage of 6% (only 50 people) did not receive advertising messages (Table 4.6).
Table 4.6: Percentage of people receiving advertising messages in the last 3 months
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Have
785
94.0
94.0
94.0
Are not
50
6.0
6.0
100.0
Total
835
100.0
100.0
The results of Table 4.6 show that consumers in the inner city of Hanoi are very familiar with advertising messages. This result is also the basis for assessing the knowledge, experience and understanding of the respondents in the interview. This is also one of the important factors determining the accuracy of the survey results.
In addition, most respondents said they had received promotional messages, but only 24% of them had ever taken the action of registering to receive promotional messages, while 76% of the remaining respondents did not register to receive promotional messages but still received promotional messages every day. This is the first sign indicating the weaknesses and shortcomings of lax management of this activity in Vietnam. (Table 4.7)
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Political quality education for students of National Defense and Security Education Center - Thai Nguyen University - 2 -
Improving interest in physical education lessons for students of the College of Economics and Technology - Thai Nguyen University - 11 -
Teaching Dong Anh Folk Songs to vocal music students of Thanh Hoa University of Culture, Sports and Tourism - 1 -
Discipline education for students at the Center for National Defense and Security Education - Thai Nguyen University - 1

Source: Thesis topic survey results
Table 3.1 shows that 40.6% of the students surveyed said that “Using mobile phones is necessary”. This rate is 42.1% in the male group and 38.8% in the female group. At the level of “absolutely necessary”, 33.1% of the students answered, of which 31.2% were male and 35% were female, and at the level of “very necessary”, 14.4% of the students answered, of which 13.8% were male and 15% were female. These figures show that there is not much difference between male and female students, the rate of assessing the level of necessity, absolutely necessary and very necessary between them is almost the same. This shows that the majority of students consider mobile phones to be very important, a necessary tool in their lives. However, only a small percentage of 11.9% of the total number of students participating in the survey said that mobile phones were less necessary or completely unnecessary for them, but they did not completely deny the importance of mobile phones in today's life.
27
The assessment of the necessity of e-learning for students has a big difference between the years of study (See Table 3.2). This shows that e-learning has occupied a prominent position in the life of every student, whether male or female, and regardless of the time of study in a certain environment. As in an in-depth interview, when asked if e-learning is really necessary, the author received the following answer:
“For me, the smartphone is very necessary and is my most effective support tool in every aspect and most important when compared to my wallet and keys - three indispensable items when I go out. Because since using the smartphone, all my problems have been solved such as studying, entertainment or connecting with friends and family.. all are done well by the smartphone and for a long time I have considered the smartphone as my friend.”
[Female student, 2nd year, majoring in sociology]
Table 3.2. Students' assessment of the importance of ICT by academic year
Unit: %
The role of e-commerce in
life
Year 1 | Year 2 | Year 3 | Year 4 | Total | |
Completely unnecessary | 16.7 | 33.3 | 16.7 | 33.3 | 100.0 |
Less necessary | 0.0 | 15.4 | 46.2 | 38.5 | 100.0 |
Necessary | 33.8 | 24.6 | 21.5 | 20.0 | 100.0 |
Absolutely necessary | 32.1 | 22.6 | 20.8 | 24.5 | 100.0 |
Very necessary | 21.7 | 21.7 | 34.8 | 21.7 | 100.0 |
Total | 28.1 | 23.1 | 25.0 | 23.8 | 100.0 |
Source: Thesis topic survey results
3.1.2. Students' need for using mobile phones
Mobile phones are now not just a technological gadget, but more than that, they are an indispensable friend to young people, especially those who are still in school age - an age of dynamism, sensitivity, creativity, always aiming for the new, the different and the special... like today's students [34]. The content of this section will present the purpose of use, thereby pointing out the needs of students when using mobile phones.
Table 3.3. Purpose of using mobile phones by students
Purpose
N | Rate (%) | |
Contact and visit people | 112 | 70.0 |
Connect with friends (Make friends with everyone) via social media) | 94 | 58.8 |
Entertainment (Listen to music, watch movies online, play games) game... ) | 95 | 59.4 |
Online shopping | 56 | 35.0 |
Serving learning needs | 85 | 53.1 |
Update new news from information sites | 68 | 42.5 |
Business advertising | 21 | 13.1 |
Show class and style | 13 | 8.1 |
Source: Thesis topic survey results
It can be seen that the main purpose of using mobile phones of students is to serve the needs of studying, entertainment, communication and connecting with friends. The response rate for the purpose of contacting and visiting people accounts for 70%, showing that for students, the interactive relationship with family, school, community, friends and society is always a concern. And in parallel, the purpose of connecting with friends (making friends with people through social networks) with a response rate of 58.8% shows that mobile phones are gradually providing utilities for students' lives, helping them expand and develop their relationships.
“My main purpose is to use Facebook to find new friends, chat with old friends and contact my parents.”
[Male student, year 1, majoring in construction and electricity]
Studying is still one of the most important and indispensable needs for students today with a response rate of 53.1%. It can be seen that students often take advantage of the positive points of smartphones to help them have the most scientific ways to use them to serve their studies at different times such as at school, in class or at home... We can see that smartphones are a convenient device.
used by students when looking up information, searching for learning materials, and supporting foreign language learning through applications. In some schools, in addition to connecting a laptop to a projection screen, students now also use smartphones as a miniature screen, a convenient notebook to confidently present with lessons saved on their own smartphones [35]. Many students feel more confident and convenient when holding a miniature screen in their hands than a pre-printed document, in addition, for critical questions, students can use the search for documents quickly right on their smartphones. Smartphones also help students store and access documents quickly when doing exercises, update a lot of new knowledge in addition to the knowledge received in the classroom and can maximize their learning skills in a university environment with self-study, self-exploration, and self-research being the main focus. In addition, using mobile phones to search and update daily news is also one of the ways to improve students' knowledge and information, through which they will gain a new amount of knowledge every day. The updated news can be related to fields such as economics, politics, society or updating legal news is also an extremely useful way to improve knowledge not only for students but also for everyone in society [11].
“ Mobile phones serve my studies very well in terms of finding out, accessing information, social knowledge… and are also a tool that helps me interact with teachers, groups, and can help me connect with other groups outside to supplement my knowledge. And especially, mobile phones are a tool for me to take photos and record important content from lecturers to support my studies.”
[Male student, 4th year, Law] Besides studying, “entertainment purpose” is also chosen by students with a response rate of 59.4%. Currently, students' entertainment is very rich and diverse such as listening to music, playing games, watching movies, chatting.
with friends…
In addition, 42.5% of students in the survey sample use smartphones to "Update new news from information sites" to help students understand more information.

![Mobile Phone Usage in Hanoi Inner City Area
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- Test the relationship between demographic variables and consumer behavior for Mobile Marketing activities
The analysis method used is the Chi-square test (χ2), with statistical hypotheses H0 and H1 and significance level α = 0.05. In case the P index (p-value) or Sig. index in SPSS has a value less than or equal to the significance level α, the hypothesis H0 is rejected and vice versa. With this testing procedure, the study can evaluate the difference in behavioral trends between demographic groups.
CHAPTER 4
RESEARCH RESULTS
During two months, 1,100 survey questionnaires were distributed to mobile phone users in the inner city of Hanoi using various methods such as direct interviews, sending via email or using questionnaires designed on the Internet. At the end of the survey, after checking and eliminating erroneous questionnaires, the study collected 858 complete questionnaires, equivalent to a rate of about 78%. In addition, the research subjects of the thesis are only people who are using mobile phones, so people who do not use mobile phones are not within the scope of the thesis, therefore, the questionnaires with the option of not using mobile phones were excluded from the scope of analysis. The number of suitable survey questionnaires included in the statistical analysis was 835.
4.1 Demographic characteristics of the sample
The structure of the survey sample is divided and statistically analyzed according to criteria such as gender, age, occupation, education level and personal income. (Detailed statistical table in Appendix 6)
- Gender structure: Of the 835 completed questionnaires, 49.8% of respondents were male, equivalent to 416 people, and 50.2% were female, equivalent to 419 people. The survey results of the study are completely consistent with the gender ratio in the population structure of Vietnam in general and Hanoi in particular (Male/Female: 49/51).
- Age structure: 36.6% of respondents are <23 years old, equivalent to 306 people. People from 23-34 years old
accounting for the highest proportion: 44.8% equivalent to 374 people, people aged 35-45 and >45 are 70 and 85 people equivalent to 8.4% and 10.2% respectively. Looking at the results of this survey, we can see that the young people - youth account for a large proportion of the total number of people participating in the survey. Meanwhile, the middle-aged people including two age groups of 35 - 45 and >45 have a low rate of participation in the survey. This is completely consistent with the reality when Mobile Marketing is identified as a Marketing service aimed at young people (people under 35 years old).
- Structure by educational level: among 835 valid responses, 541 respondents had university degrees, accounting for the highest proportion of ~ 75%, 102 had secondary school degrees, ~ 13.1%, and 93 had post-graduate degrees, ~ 11.9%.
- Occupational structure: office workers and civil servants are the group with the highest rate of participation with 39.4%, followed by students with 36.6%. Self-employed people account for 12%, retired housewives are 7.8% and other occupational groups account for 4.2%. The survey results show that the student group has the same rate as the group aged <23 at 36.6%. This shows the accuracy of the survey data. In addition, the survey results distributed by occupational criteria have a rate almost similar to the sample division rate in chapter 3. Therefore, it can be concluded that the survey data is suitable for use in analysis activities.
- Income structure: the group with income from 3 to 5 million has the highest rate with 39% of the total number of respondents. This is consistent with the income structure of Hanoi people and corresponds to the average income of the group of civil servants and office workers. Those
People with no income account for 23%, income under 3 million VND accounts for 13% and income over 5 million VND accounts for 25%.
4.2 Mobile phone usage in Hanoi inner city area
According to the survey results, most respondents said they had used the phone for more than 1 year, specifically: 68.4% used mobile phones from 4 to 10 years, 23.2% used from 1 to 3 years, 7.8% used for more than 10 years. Those who used mobile phones for less than 1 year accounted for only a very small proportion of ~ 0.6%. (Table 4.1)
Table 4.1: Time spent using mobile phones
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Alid
<1 year
5
.6
.6
.6
1-3 years
194
23.2
23.2
23.8
4-10 years
571
68.4
68.4
92.2
>10 years
65
7.8
7.8
100.0
Total
835
100.0
100.0
The survey indexes on the time of using mobile phones of consumers in the inner city of Hanoi are very impressive for a developing country like Vietnam and also prove that Vietnamese consumers have a lot of experience using this high-tech device. Moreover, with the majority of consumers surveyed having a relatively long time of use (4-10 years), it partly proves that mobile phones have become an important and essential item in peoples daily lives.
When asked about the mobile phone network they are using, 31% of respondents said they are using the network of Vietel company, 29% use the network of
of Mobifone company, 27% use Vinaphone companys network and 13% use networks of other providers such as E-VN telecom, S-fone, Beeline, Vietnammobile. (Figure 4.1).
Figure 4.1: Mobile phone network in use
Compared with the announced market share of mobile telecommunications service providers in Vietnam (Vietel: 36%, Mobifone: 29%, Vinaphone: 28%, the remaining networks: 7%), we see that the survey results do not have many differences. However, the statistics show that there is a difference in the market share of other networks because the Hanoi market is one of the two main markets of small networks, so their market share in this area will certainly be higher than that of the whole country.
According to a report by NielsenMobile (2009) [8], the number of prepaid mobile phone subscribers in Hanoi accounts for 95% of the total number of subscribers, however, the results of this survey show that the percentage of prepaid subscribers has decreased by more than 20%, only at 70.8%. On the contrary, the number of postpaid subscribers tends to increase from 5% in 2009 to 19.2%. Those who are simultaneously using both types of subscriptions account for 10%. (Table 4.2).
Table 4.2: Types of mobile phone subscribers
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Prepay
591
70.8
70.8
70.8
Pay later
160
19.2
19.2
89.9
Both of the above
84
10.1
10.1
100.0
Total
835
100.0
100.0
The above figures show the change in the psychology and consumption habits of Vietnamese consumers towards mobile telecommunications services, when the use of prepaid subscriptions and junk SIMs is replaced by the use of two types of subscriptions for different purposes and needs or switching to postpaid subscriptions to enjoy better customer care services.
In addition, the majority of respondents have an average spending level for mobile phone services from 100 to 300 thousand VND (406 ~ 48.6% of total respondents). The high spending level (> 500 thousand VND) is the spending level with the lowest number of people with only 8.4%, on the contrary, the low spending level (under 100 thousand VND) accounts for the second highest proportion among the groups of respondents with 25.4%. People with low spending levels mainly fall into the group of students and retirees/housewives - those who have little need to use or mainly use promotional SIM cards. (Table 4.3).
Table 4.3: Spending on mobile phone charges
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<100,000
212
25.4
25.4
25.4
100-300,000
406
48.6
48.6
74.0
300,000-500,000
147
17.6
17.6
91.6
>500,000
70
8.4
8.4
100.0
Total
835
100.0
100.0
The statistics in Table 4.3 are similar to the percentages in the NielsenMobile survey results (2009) with 73% of mobile phone users having medium spending levels and only 13% having high spending levels.
The survey results also showed that up to 31% ~ nearly one-third of respondents said they sent more than 10 SMS messages/day, meaning that on average they sent 1 SMS message for every working hour. Those with an average SMS message volume (from 3 to 10 messages/day) accounted for 51.1% and those with a low SMS message volume (less than 3 messages/day) accounted for 17%. (Table 4.4)
Table 4.4: Number of SMS messages sent per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
142
17.0
17.0
17.0
3-10 news
427
51.1
51.1
68.1
>10 news
266
31.9
31.9
100.0
Total
835
100.0
100.0
Similar to sending messages, those with an average message receiving rate (from 3-10 messages/day) accounted for the highest percentage of ~ 55%, followed by those with a high number of messages (over 10 messages/day) ~ 24% and those with a low number of messages received daily (under 3 messages/day) remained at the bottom with 21%. (Table 4.5)
Table 4.5: Number of SMS messages received per day
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
<3 news
175
21.0
21.0
21.0
3-10 news
436
55.0
55.0
76.0
>10 news
197
24.0
24.0
100.0
Total
835
100.0
100.0
When comparing the data of the two result tables 4.4 and 4.5, we can see the reasonableness between the ratio of the number of messages sent and the number of messages received daily by the interview participants.
4.3 Current status of SMS advertising and Mobile Marketing
According to the interview results, in the 3 months from the time of the survey and before, 94% of respondents, equivalent to 785 people, said they received advertising messages, while only a very small percentage of 6% (only 50 people) did not receive advertising messages (Table 4.6).
Table 4.6: Percentage of people receiving advertising messages in the last 3 months
Frequency
Ratio (%)
Valid Percentage
Cumulative Percentage
Valid
Have
785
94.0
94.0
94.0
Are not
50
6.0
6.0
100.0
Total
835
100.0
100.0
The results of Table 4.6 show that consumers in the inner city of Hanoi are very familiar with advertising messages. This result is also the basis for assessing the knowledge, experience and understanding of the respondents in the interview. This is also one of the important factors determining the accuracy of the survey results.
In addition, most respondents said they had received promotional messages, but only 24% of them had ever taken the action of registering to receive promotional messages, while 76% of the remaining respondents did not register to receive promotional messages but still received promotional messages every day. This is the first sign indicating the weaknesses and shortcomings of lax management of this activity in Vietnam. (Table 4.7)
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