You can get alerts about nearby threats or emergencies. If your phone is on Wi-Fi only mode, or there's no cell signal, you might not get emergency messages. Authorized national, state, or local government authorities may send alerts regarding public safety emergencies.
Setting Path:
realme UI 3.0 & above versions: Settings > Safety & emergency > Wireless emergency alerts
realme UI T & U Edition: Settings > Safety & emergency > Wireless emergency alerts
realme UI 2.0 & 1.0: Not supported
realme UI R & Go & S Edition: Not supported