Bangkok, May 7, 2025 – True Corporation Plc, in collaboration with the Department of Disaster Prevention and Mitigation (DDPM), has successfully conducted a mid-level Cell Broadcast Service emergency alert test at the district level. Alert messages were sent to mobile phones in designated district areas across five provinces, covering a total population of over 600,000 people. This marks another significant step toward developing a more accurate and comprehensive emergency warning system. A large-scale, provincial-level test is now scheduled for May 13, which is expected to reach over 11 million people nationwide, based on data from the Department of Provincial Administration (April 2025).
Mr. Paskorn Boonyalug, Director-General of the Department of Disaster Prevention and Mitigation (DDPM), said, “The Cell Broadcast mid-level warning test conducted in partnership with True Corporation on May 7, 2025, at 1:00 PM is a major step in preparing Thailand’s emergency alert systems. This test was carried out in five districts, estimated to cover about 600,000 residents. The areas included Mueang Lampang District (Lampang), Mueang Nakhon Ratchasima District (Nakhon Ratchasima), Mueang Nakhon Sawan District (Nakhon Sawan), Mueang Surat Thani District (Surat Thani), and Din Daeng District (Bangkok). Alert signals were transmitted to residents in every village, community, and subdistrict within each designated district. A provincial-level test is scheduled for May 13, 2025.”
The upcoming provincial-level test will cover five provinces: Chiang Mai, Phra Nakhon Si Ayutthaya, Udon Thani, Nakhon Si Thammarat, and Bangkok. Following the completion of tests at all three levels, the DDPM plans to conduct a nationwide test simultaneously across all 77 provinces in the future.
Mr. Chakkrit Urairat, Chief Corporate Affairs Officer, True Corporation Plc, said,“This successful mid-level Cell Broadcast alert test with the DDPM marks another milestone in enhancing Thailand’s disaster warning systems to international standards. In an era of increasingly frequent and severe natural disasters, we prioritize public safety. As the first 5G network provider to implement a complete Cell Broadcast system nationwide, True is committed to playing a vital role in improving safety for all Thais and will continue to operate at full efficiency in accordance with established standard operating procedures.”
From the previous small-scale tests, it was found that the system could deliver alert messages to mobile phones within the designated areas in under one minute on both Android and iOS devices, demonstrating satisfactory performance. Residents in the test areas received the Cell Broadcast alert messages as scheduled.
According to registered population statistics from Official statistics registration systems (April 2025), the mid-level test areas cover over 600,000 people, while the large-scale test areas cover more than 11 million people.
Population by District:
- Mueang Lampang District, Lampang: 88,770 people
- Mueang Nakhon Ratchasima District, Nakhon Ratchasima: 229,867 people
- Mueang Nakhon Sawan District, Nakhon Sawan: 162,029 people
- Mueang Surat Thani District, Surat Thani: 19,210 people
- Din Daeng District, Bangkok: 110,109 people
Population by Province:
- Chiang Mai: 1,798,493 people
- Phra Nakhon Si Ayutthaya: 822,688 people
- Udon Thani: 1,550,212 people
- Nakhon Si Thammarat: 1,533,104 people
- Bangkok: 5,442,588 people
About Cell Broadcast Service:
Cell Broadcast Service is a communication technology that enables messages to be sent to all 4G and 5G mobile devices within a specific geographic area. It supports Android devices running version 11 or later and iPhones with iOS 18 or later. iPhone users connected to cell towers in the target area will receive the alert without requiring a specific phone number. This system is critically important for emergency and disaster warnings, as it allows for rapid and accurate communication with people in affected areas.
