My galaxy mini 2 fell into a bootloop after taking it to a metro pcs dealer to get a new sim card and phone contract. However a couple of hours after it was just fine. A month later its having the same bootloop again but now it has been like this for a week and looks as if the power button was always pressed. Because as soon as i put in the battery it goes on... and if i repeatedly press the power key it actually starts but then displays the "shut down phone" confirmation and goes off. Is it possible to have a software bug that does this? Or its definitely a short circuit within the power key?