I'm new to droid! I made my other devices display and function different

[Rojita]

I was playing with development app but I was connected to my pc along with battery pack Xbox controller and another phone! I somehow change their display and function in Bluetooth help!

 

[Hadron]

Can you be more pretty, e.g. what "development app", how you were connected to 3 other devices (and a battery pack), what exactly you changed? Your post isn't clear enough to understand what has happened.