Vietnam's telecommunications regulator has assigned 900MHz spectrum blocks to three domestic mobile operators, according to a report from VietNamNet.

The 900MHz band is the most contested low-band spectrum in Vietnam's mobile market. Its propagation characteristics make it the cheapest way to cover rural areas and to deepen indoor coverage in dense urban centers, which is why the country's carriers have historically treated it as core network infrastructure rather than a supplementary asset.

Vietnam's mobile market is served by a small set of licensed operators, and the award of 900MHz blocks to three of them signals how the regulator, the Ministry of Information and Communications, intends to distribute scarce low-band capacity across the market. The report did not disclose the financial terms of the assignments, the size of the individual blocks, or the duration of the usage rights.

Why 900MHz matters

Spectrum in the 900MHz range carries signals over long distances and penetrates walls far better than mid-band frequencies in the 1.8GHz to 2.6GHz range that operators also hold. For a country where a large share of the population lives outside the main cities of Hanoi and Ho Chi Minh City, low-band assignments largely determine how far a network reaches economically.

Vietnamese operators have used their existing 900MHz holdings to run 2G and 4G services on the same frequencies. How the newly assigned blocks will be used — whether for expanded LTE coverage or eventually refarmed for newer technologies — will depend on license conditions that have not been detailed in the report.

What remains unknown

The VietNamNet report confirms the number of winning operators and the band, but leaves several commercial questions open: which operators received which blocks, what each paid, and whether the award changes the competitive balance in a market where operators compete heavily on coverage in provincial areas.

Pricing for the band is a sensitive topic in Vietnam. Operators have repeatedly argued in public consultations that spectrum fees should be set low enough to leave room for network investment, a position the regulator has weighed against the state's interest in maximizing proceeds from a scarce national resource.

The assignment also comes as Vietnam's mobile sector manages the long tail of its 2G shutdown, a process that frees up 900MHz capacity for modern services and makes fresh assignments in the band more valuable to the winning operators.

The operators are expected to put the new blocks to use under the timelines set by their licenses, with the ministry continuing to manage the band as 2G退网 progresses and demand for low-band 4G capacity grows.