Viettel Telecom, the telecommunications arm of Vietnam’s Viettel Group, has launched a week-long reward program worth VND 220 billion (about USD 8.4 million, at roughly VND 26,300 per dollar). The program marks 22 years since the operator started mobile services on October 15, 2004. It runs from October 15 to October 21, 2026 and covers all the operator’s prepaid and postpaid mobile subscribers nationwide.
Instead of one grand prize, the company has spread the value across daily rewards delivered through Tammi, its digital services app. Subscribers who open the Tammi Gift Basket section can claim one reward a day, worth up to VND 220,000 (about USD 8.4), according to Viettel. The promotional credit expires 24 hours after it is claimed, so the value is designed to be spent the same day.
Prepaid subscribers who buy one of 16 eligible 5G plans inside Tammi during the birthday week receive a rebate of 22 percent of the plan price. The rebate lands as promotional data credit, valid for 15 days. On October 15 itself, which Viettel calls its golden day, prepaid subscribers who top up through any channel receive an extra 22 percent of the top-up value. That bonus is split evenly between an on-net calling account and a data account, also valid for 15 days.
A parallel loyalty program runs through Viettel++, the rewards section inside the app. Users who open the section each day can receive a Tammi Xu voucher. Its denominations are built around the number 22, from 2,200 points up to 2.2 million points, and each voucher arrives with a personalized thank-you message. Viettel says users can accumulate up to 2.2 million points during the week. They can then swap the points for travel, shopping, dining, tourism, and entertainment vouchers in the app’s rewards store.
Tammi is Viettel’s communication and digital services platform. It combines close to 50 utilities in a single app, from voice calls and messaging to online meetings, service management, shopping, travel, and health care. According to Viettel, the app has been installed and used by nearly 20 million people.
Viettel’s mobile network launched in 2004 with the 098 prefix. It is widely credited with turning mobile phones from a luxury into an everyday service in Vietnam. Twenty-two years on, the anniversary program shows where the operator wants that customer relationship to live: inside its own app, where subscribers come back every day for small, immediate rewards.
Sources: GenK, Viettel opens a VND 220 billion gift pool on Tammi for its 22nd mobile anniversary (in Vietnamese); Vietnam.vn, Viettel marks 22 years of mobile services with a VND 220 billion gift pool on Tammi (in Vietnamese)
