CellBroadcast Channels defined in ETSI TS 123 041:
- ETSI TS 123 041 V9.2.0 (2010-01) specifies CMAS on Channel-IDs 4370-4399 (0x1112-0x112F) for the first time (see section 9.4.1.2.2)
- ETSI TS 123 041 V11.4.0 (2012-10) specifies EU-Alert on same Channel-IDs 4370-4399 (0x1112-0x112F) for the first time (see section 9.4.1.2.2)
EU-Alert is specified in ETSI TS 102 900.
Android implements CMAS (and thus EU-Alert) since at least Android 4.2.2 and dispatches them as special SMS messages. Also ♥ to https://twitter.com/WIStudent/status/1528106488577011712 for bringing this up.
See https://source.android.com/devices/architecture/modular-system/cellbroadcast for more information about CellBroadcast in Android
More Links: