# Viettel digital platform expansion and promotion

> Live situation record from CLSTR: https://clstr.news/situations/viettel-digital-platform-expansion-and-promotion
> Updated: 2026-10-27T03:46:00.000Z. Sources: 3. Developments: 2.

In mid-October 2026, Viettel launched a 220 billion VND promotional campaign to celebrate its 22nd anniversary of mobile service operations. The campaign, centered on the Viettel Tammi platform, offered subscribers various incentives including daily rewards, 5G package cashback, and top-up bonuses.

By late October 2026, Viettel announced that the Viettel Tammi platform had surpassed 20 million users within three months of its launch. The platform has seen significant growth, ranking highly on mobile app stores and attracting users from competing providers like VinaPhone and MobiFone. To support its user base, Viettel provides features such as zero-rated data, cloud storage, and AI-integrated security tools.

## Claims

- Viettel Tammi reached 20 million users within three months of launch. (corroborated by 3 sources)
- Approximately 10% of Tammi users are subscribers of other networks like VinaPhone or MobiFone. (corroborated by 3 sources)
- The DAU/MAU ratio for October reached nearly 30%. (corroborated by 3 sources)
- The platform includes an integrated AI assistant for information search and queries. (corroborated by 3 sources)
- The app uses end-to-end encryption (E2EE) for supported communication modes. (corroborated by 2 sources)
- The app supports identity authentication through VNeID. (corroborated by 2 sources)
- Viettel subscribers receive zero-rated mobile data when using the Tammi app. (corroborated by 2 sources)
- The app provides 5GB of free storage on Viettel Cloud for subscribers. (corroborated by 2 sources)

## Timeline

### 2026-10-27: Viettel Tammi reaches 20 million users within three months

Viettel's digital platform Tammi has reached 20 million users in under three months, attracting users from multiple networks in Vietnam.

3 sources. https://clstr.news/cluster/viettel-tammi-reaches-20-million-users-within-three-months

### 2026-10-16: Viettel launches 220 billion VND promotion for 22nd anniversary

Viettel is celebrating its 22nd anniversary with a 220 billion VND promotional campaign on the Viettel Tammi app, offering daily rewards and top-up bonuses for mobile subscribers.

2 sources. https://clstr.news/cluster/viettel-launches-220-billion-vnd-promotion-for-22nd-anniversary

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Cite as: Viettel digital platform expansion and promotion. CLSTR, https://clstr.news/situations/viettel-digital-platform-expansion-and-promotion