CB alerts are activated by default on CB-capable Huawei smartphones sold in Greece and running an Android version newer than December 2019. It is not recommended to turn off CB alerts on your device.
Toggle Cell Broadcasting on/off
Step 1: Open the Settings menu
Step 2: Select “Sound”, then select “More sound settings”.
Step 3: Tap “Mobile notifications”.
Step 4: Find the “Extreme alerts” and “Emergency alerts” option and turn it on/off.