On May 31, 2026, the Ministry of Science and Technology (MST) of Vietnam issued two circular notices regarding the adjustment of mobile communication spectrum, which are:

• Circular No. 27/2026/TT-BKHCN will take effect from July 16, 2026. The circular allocated 470-606 MHz to terrestrial digital TV services; MST may approve applications or extensions for terrestrial digital TV business licenses within the 606-694 MHz band, but the latest is December 31, 2028. If MST officially issues a written notice confirming that the 606-694 MHz band will begin mobile communications, all units still using this band must unconditionally complete the conversion to other compliant bands (such as 470-606 MHz) within 6 months of receiving the notification;
• Circular No. 29/2026/TT-BKHCN, which will take effect from September 16, 2026. The circular designates 890-915 MHz as the uplink band and 935-960 MHz as the downlink band, which can be used for 3G, 4G, and 5G mobile communications, with 3G available until September 14, 2028.

Click this link to view Circular No. 27/2026/TT-BKHCN, click this link to view the link for Circular No. 29/2026/TT-BKHCN.