My development testing device (Google Pixel) just rang during the German annual test of the emergency alert system.
No SIM card, Wifi disabled. 🫠
Store your secrets physical and offline (that means on a device WITHOUT networking capabilities / hardware!)
The phone's mobile network modem was disabled or not? If not, that's why you got the message. The phone is randomly "talking" with the towers around it even without sim...
In the US. Phones have to work with 911. Even without a SIM. Eeven if locked.
Install GrapheneOS on it and you can disable that feature completely
I had a WiFi connection and no SIM on my GrapheneOS device. Same, I got the alert. I have no idea how I should disable the GSM connection completely.
Do you know a actually good tutorial on how to download it to pixel 7? I already bricked one phone on my first try.
💀
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Cell broadcast
