First of all my home button has stopped working, how can I change it back? I miss this feature! It will still wake the phone but will not do anything else? Second, I cannot get it setup correctly on my straight talk account. I had an at&t unlocked s4 & now have an international unlocked s5, same sim card. Everything is apparently going off at&t. Is there something beside APN's I need to change? Thanks in advance.