[xyst]

Simple solution: just use "dumb phones" or burners

No non-open source "smart" phone is going to be secure enough. If you never store your data on your phone, you are safe from these hacks. Now you have to just protect from physical attacks :)

[site-packages1]

CopperheadOS is an open source OS that builds on Android and can be used on the Pixel devices. I've found it to be quite secure.

[wolverine876]

Didn't CopperheadOS shut down years ago? The developer, Daniel Micay, now develops GrapheneOS.

[gjsman-1000]

Except for physical attacks. No root of trust means that if your phone was ever stolen, installing a PIN guessing app is easy. Extracting the encrypted data for attacking it elsewhere is also easy.