Never thought that i will be at a point of being this suspicious, but i am. I bought 2 Bittium Though Pro phones, that are like your GrapheneOS more locked-down phone for specialized use cases. Running its own OS and no google stuff at all on it.

Bittium

Secure Smartphones for Professionals

Today, for professionals working in governmental agencies and enterprises, there is a need for reliable smartphones for handling sensitive data. Bi...