-68% use mobile communication service. -Viettel 62%, MobiFone 22.5%, Vinaphone 13% -Viettel has the second to none popularity in other areas except Ho Chi Minh where the competition with MobiFone is tougher. -90% of users prepay, and most of post-paid users are full-time employment. -MobiFone had the highest satisfaction score in all categories. Viettel is stronger in all area except HCMC than in only HCMC.

1. Your sub-title here
Vietnamese Mobile Network Satisfaction Survey
- Satisfaction comparison among 3 mobile carriers

2. Survey information
• Vietnamese Mobile Usage
• Conducted in March, 2015
• 1100 male / female above 16 years old

3. Executive Summary
• 68% use mobile communication service.
• Viettel 62%, MobiFone 22.5%, Vinaphone 13%
• Viettel has the second to none popularity in other areas
except Ho Chi Minh where the competition with
MobiFone is tougher.
• 90% of users prepay, and most of post-paid users are
full-time employment.
• MobiFone had the highest satisfaction score in all
categories. Viettel is stronger in all area except HCMC
than in only HCMC.

4. Do you use mobile data service for mobile phone or
tablet?
Yes, 68%
No ( Wi-Fi
connection is
good enough),
20%
No (I do not
own mobile
device), 3% No
(others),
9%
68% use mobile communication service.

5. Which carrier do you use the most?
0.1%
0.4%
0.5%
1.9%
13.0%
22.5%
61.6%
0% 20% 40% 60% 80%
S-Fone
EVN Telecom
Gmobile
Vietnamobile
Vinaphone
MobiFone
Viettel
Viettel 62%, MobiFone 22.5%, Vinaphone 13%

6. Which communication company do you use the
most? (by area)
Viettel has the second to none popularity in other areas except
Ho Chi Minh where the competition with MobiFone is tougher.
2.9%
4.2%
2.5%
14.9%
11.4%
9.3%
15.9%
11.4%
41.2%
66.4%
72.9%
47.1%
0% 20% 40% 60% 80%
Other areas
Hanoi
Ho Chi Minh
Viettel
MobiFone
Vinaphone
OtherCarriers

7. Which is type of your payment?
90% of users prepay, and most of post-paid users are full-
time employment.
Pre-paid, 90%
Post-paid,
10%

8. How much is your mobile phone bill per month?
0.0%
8.6%
26.4%
23.7%
16.2%
25.2%
2.3%
31.2%
47.3%
12.3%
3.5% 3.5%
0.8%
16.5%
34.1%
19.7%
11.6%
17.3%
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
35.0%
40.0%
45.0%
50.0%
Non-Students Students All
51.4% people use less than 100K VND / month

9. How much data do you use for 3G connection per
month?
9.5%
5.1%
8.4%
16.3%
19.5%
20.2%
9.6% 11.2%
10.8%
9.2%
13.8%
11.6% 11.9%
17.3%
13.5%
11.9%
10.2%
6.6%
10.6%
15.0%
16.6%
18.7%
11.1%
11.2%
0.0%
5.0%
10.0%
15.0%
20.0%
Non-Students Students All
Those who use 600MB – 1GB are the most popular.

10. How long do you talk on the mobile phone in a
week?
3.0%
10.6%
34.7%
23.3%
12.5%
16.0%
9.3%
18.9%
36.6%
21.1%
8.9%
5.4%5.8%
13.9%
35.0%
22.3%
11.0%
12.1%
0.0%
5.0%
10.0%
15.0%
20.0%
25.0%
30.0%
35.0%
40.0%
seldom talk on
moibile
〜10min 10min〜1hour 1hour〜3hours 3hours〜6hours 6hours〜
Non-Students Students All
Employers tend to call a bit more than students.
Those who talks 10 min〜1 hr weekly are the most popular.
*Including VoIP, like Viber

11. Satisfaction score* by each carrier
Viettel MobiFone Vinaphone
Area coverage 3.55 3.92 3.56
3G data quality** 3.16 3.42 2.80
Call quality** 3.72 3.82 3.62
* Based on the average calculation of 5 grade scoring (Sum of
each level(1 - 5) × ratio(%) × 0.01)
** Excluding VoIP and users not using 3G data or call, and VoIP
MobiFone had the highest score in all categories.

12. Satisfaction score by each carrier by area
Other areas Viettel
MobiFo
ne
Vinaph
one
Area 3.58 3.88 3.50
3G data 3.27 3.37 2.82
Call 3.78 3.81 3.63
Hanoi Viettel
MobiFo
ne
Vinaph
one
Area 3.51 3.90 3.63
3G data 2.92 3.33 2.14
Call 3.65 4.00 3.75
HCMC Viettel
MobiFo
ne
Vinaph
one
Area 3.51 3.95 3.74
3G data 2.94 3.49 3.00
Call 3.56 3.83 3.53

13. What do you want carrier to improve?
44.6% 46.5% 46.6% 47.3%
69.7% 70.1%
0.0%
10.0%
20.0%
30.0%
40.0%
50.0%
60.0%
70.0%
80.0%
Provide better
customer service
Better area
coverage
Better quality of
the call
Provide more
various service
plan
Better quality of
data network
Lower the
pricing
Pricing and data network quality improvements are what they want

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