Viettel
Viettel is Vietnam's largest mobile operator, offering the widest network coverage in the country alongside online self-service and top-up options. About Viettel: As a state-owned operator with the largest subscriber base and network footprint in Vietnam, Viettel offers particularly strong coverage in rural and remote areas where other operators may be weaker, alongside standard prepaid tourist SIM options. Key Features: Widest Network Coverage: The most extensive network coverage across Vietnam, including rural and mountainous areas. Tourist SIM Packages: Prepaid SIMs bundled with data, calls, and texts, available at airports and stores. Self-Service App: Check balance, top up, and manage your plan through the My Viettel app. Online Top-Up: Add credit to your line using a bank card or e-wallet. How to Get Started: Buy a Viettel tourist SIM at the airport or any Viettel store, bringing your passport. Insert the SIM and follow the activation instructions provided in-store. Download the My Viettel app to check balance and top up. Top up online or at any authorized retailer as needed. Important Notice: A passport is required to register any SIM card in Vietnam, including tourist packages — this is a legal requirement. Registration cannot be done online in advance of arrival.