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How do I make one app appear as the default app choice in Android? I'd like this app handles the calls, and accept and decline a call. So far I have tried to add these lines at manifest but no luck at all. My App doesn't appear at Settings > Apps > Default Apps > Phone app. I have this...

I've seen a few different things written that touch on this, but nothing I can find directly answers this question. Is there a way in Android to see - and change - what app is the current default app for handling a file based on the file's extension? By handling, I'm referring in my case to...

I have a samsung galaxy fold 4. If I change the hostpot name and password to what I want it to be, it'll work fine for a couple of days. Then 1-3 days later it'll automatically default to "Galaxy Z Fold 4 xxxx" (Upper case and number combination of 4 characters)as name, and a random weak...