I have a old phone where I can remove the battery. A) banking app works, but no games etc. B) browsing for information works, but no fun browsing the clickbai

I have a old phone where I can remove the battery. A) banking app works, but no games etc. B) browsing for information works, but no fun browsing the clickbait internet C) removing the battery is an physical act of letting it all go, and a blockade to quickly turn it on again D) with the battery removed, I know my phone is really off, together with all potential spyware