MobiFone [SEP] inception
MobiFone
Vietnam Mobile Telecom Services One Member Limited Liability Company (with the brand MobiFone ) is a major Vietnamese mobile network operator headquartered in Trung Hoa Nhan Chinh, Hanoi. Founded on 16 April 1993, as a Global System for Mobile Communications launcher, MobiFone is the first and currently third largest telecommunications provider in Vietnam.
Market share and competitors.
MobiFone had a market share (estimated based on revenues) of 17.9% in 2012.
Its main competitors are Viettel with 40.67% market share and Vinaphone with 30
1900 68XX - FPT Telecom
1900 70XX, 1900 71XX, 1900 72XX - SPT
1900 75XXXX, 1900 77XXXX - SPT 
1900 80XX, 1900 86XX, 1900 89XX - Viettel
1900 90XX, 1900 92XX, 1900 94XX - Viettel
1900 96XXXX - Viettel
Previous area codes not currently in use.
- 120 – Mobifone
- 121 – Mobifone
- 122 – Mobifone
- 123 – Vinaphone
- 124 – Vinaphone
- 125 – Vinaphone
- 126 – Mobifone
- 127 – Vinaphone