[Q] When apps can use their permissions?
I'm always very careful about what apps I install and their permissions, but I got this doubt for a long time. I already know what some Android permissions do and which of these are potentially dangerous.
Now let's assume an app asks for permissions to read my contacts, access the internet, read the identity of the phone, read the user position, etc.
When I use an app (mostly games) I always
turn off wifi, bluetooth, gps and sometimes even the sim via airplane-mode. Now that app can easily collect all the data it wants but would never be able to send them. Am I correct?
My doubt is, when apps can send data? Is it only when the app is effectively running (also in background) or can do the same while, for example, updating the app via Google Play?
If it doesn't, I would probably download most of the apps I discarded because of their stupid permissions...