The National Broadcasting and Telecommunications Commission (NBTC) has instructed Advanced Info Service (AIS) and True Corporation to develop detailed plans to phase out their 2G and 3G mobile networks by the third quarter of 2026. This initiative aims to combat online fraud, which often involves the use of counterfeit cellular base stations to exploit vulnerabilities in these older systems for sending fraudulent text messages.
Trairat Viriyasirikul, the acting secretary-general of the NBTC, explained that this decision follows the commission’s earlier resolution to ban the importation of 2G and 3G devices and related transmission equipment. Currently, fewer than 3 million SIM cards in Thailand operate on these outdated networks. While these systems are still used for specific purposes, such as device-to-device communication, tracking systems, and ATM operations, the major mobile operators are expected to submit their migration plans soon.
Once the plans are received, the NBTC will formulate its own strategy for shutting down the 2G and 3G services, likely starting with the 2G network before moving to 3G. The regulator also intends to host a public hearing to discuss this transition.
According to Suebsak Suebphakdi, secretary-general of Thailand’s Telecommunications Association, shutting down these longstanding networks is a normal part of technological progress as newer, more advanced mobile systems replace older ones. He highlighted that reallocating the spectrum bands from these outdated systems could benefit future users and that several countries, including the US, Singapore, and Australia, have already completed similar transitions.
However, careful planning is necessary to minimize adverse effects on consumers, and comprehensive protection strategies should be implemented. While terminating these networks might reduce certain online crimes related to exploiting network vulnerabilities—such as bogus base stations—these illegal transmitters may continue to pose problems unless strict enforcement is maintained. According to Mr. Suebsak, solving such issues requires rigorous inspection and action against those illegally importing transmitters.