In the past, i've cracked my screen and had it fixed. After this fix, everything was working well, no problems. Eventually, I think it was after putting some pressure on the screen, the three buttons stopped working. Home still works which is the only reason i'm still able to use the phone. But it's severely crippled the phone's capability to do much anything besides phone calls and internet Would greatly appreciate advice. I'll be happy to give more details if needed. Thanks!