Comment by _trampeltier

With Android is the same. I have an App Firewall on my Android phone and since then the standard Android gallery app does not work really anymore. A lot of things break, for ex. when I_ like to send a file with Threema, I have to go offline, choose the file and then go online again. Otherwise the file dialoge does freeze. It's just standard these days. Also a lot of things break, if you are just on a network without internet connection. Welcome in 2020.