as today a SMS-CB alert will be broadcasted (through Germanys cell network, 11am) - I wondered where the settings are. Here’s how you can check alert history and settings.
Android 12 / S
Settings → Safety & emergency → Wireless emergency alerts
Android 10 / Q and Android 11 / R
Settings → Apps and notifications → Advanced → Emergency Alerts
Android 7 / Nougat
Settings → Wireless & networks → More → Emergency Brodcasts (no list of alerts)