Oh, that sucks. Then the only safe thing is wrapping the phone in tinfoil, but it's completely useless to bring then.

Oh, I didn't know that, thanks.

Literally just an apk on fdroid

Why is this a problem? What country are you from? Protests are generally pretty legal

Why dont you use MicroG?

For anyone reading this: Mailbox.org is great, alternatives I like too are posteo and disroot. I use Discord and am happy with it. Its free and optional one time fee upgrades are possible