Security
App permissions: what to allow and what to question
The permission screen is the one moment an app has to be honest about what it wants. Reading it takes ten seconds and saves a lot of trouble.
Every app asks for permissions, and most people tap through them. But the permission list is the clearest signal you get about whether an app's appetite matches its purpose.
Match the ask to the job
A calculator that wants your contacts and location has no business doing so; a maps app obviously needs location. The question isn't "is this permission scary" but "does this app plausibly need it to do its job?"
Runtime, not install
Modern Android asks for sensitive permissions when you first use a feature, not all at once at install. That's your chance to say no and see if the app still works. Many do.
You can revoke any permission later in Settings. If an app breaks because you denied something unrelated to its core function, that tells you something too.