Vinaphone, Viettel and Mobilefone are the best SIM card operators in Vietnam Published August 8, 2017 at 630 × 420 in SIM Cards in Vietnam for Tourists | How to Buy & Activate Vinaphone, Viettel and Mobilefone are the best SIM card operators in VietnamVinaphone, Viettel and Mobilefone are the best SIM card operators in Vietnam← PreviousNext →