Thailand tests new emergency alert – first cell broadcast system shows promising results

Thailand’s new emergency alert system via mobile networks – a so-called cell broadcast system – has now undergone its first major field test. The results were generally positive, with fast dispatch and wide coverage, but also with some technical adjustments still to be made. The next test will be conducted on May 7 – and the system could become a future life-saving tool in floods and other acute crises.

The system alerts directly to your mobile phone

The new cell broadcast system sends disaster alerts directly to mobile phones, without the user needing an app or subscription. The test on May 2 simulated flash floods in five locations in Thailand.

According to Pasakorn Boonyalak, Director General of Department of Disaster Prevention and Mitigation, the warnings reached all users within a minute – regardless of whether they had Android or iOS.

Positive – but with signal spillage

The signals were sent for ten minutes. However, it was discovered that the alarm reached 1,5 kilometers outside the test area due to uneven coverage in mobile networks. The problem is seen as less serious, but authorities have promised to fine-tune the technology in future tests.

Dual technology: both broadcast and SMS

The system is adapted for modern phones: Android 11 (70 million users) and iOS 18 (50 million). For older 2G and 3G devices (about 3 million users), the same alert is sent via SMS within 10 minutes. Both systems are used in parallel to ensure that no one misses an important alarm.

New tests in May

The next test is taking place 7 May at 13.00 in five city districts:

• Din Daeng (Bangkok)
• Lampang
• Khon Kaen
• Nakhon Sawan
• Surat Thani

Afterwards, a plan is being provincial test May 13 at 13.00: ​ p.m., in:

• Chiang Mai
• Udon Thani
• Ayutthaya
• Nakhon Si Thammarat
• Bangkok

The warnings will be sent out on both Thai and English.

Conclusion

The cell broadcast system is part of Thailand's increased focus on emergency preparedness, as weather-related disasters such as floods and storms have become more common. Although the technology is new in Thailand, it is already used in several other countries - and now the Thai system has also taken its first step towards full-scale use.

Frequently asked questions about cell broadcast alerts in Thailand

Will I receive the alerts automatically?
Yes, if you have a mobile that supports the system. You don't need to download anything.

Which mobile version is required?
Android 11 or later and iOS 18 or later. Older phones will receive SMS within 10 minutes.

Do I need internet?
No. Cell broadcast uses the cellular network directly – not Wi-Fi or mobile data.

Will I receive a warning even if I am in a different area?
Only if you are within the area being alarmed. However, some "signal spillover" may occur in nearby zones.

Read more:

• How cell broadcast alerts work in Thailand »
• Test of disaster warning via SMS and cell broadcast – May 2025 »
• Background: SMS warning after earthquake in Thailand 2025 »

Source: NBT World

Text: The editorial staff

Image license: StockSnap, Pixabay, original image