does anyone have this problem? I just got my phone today, was testing the phone to see if it works correctly. I open the menu, it went back to home screen. I clicked on the application on the menu, the application opened and soon it went back to the menu. It is random, but happens pretty frequent. It is becoming annoy because it stops my work and went back to previous screen. Is it a hardware or software issue? I had hard reset the phone, but doesn't work. Does anyone have same problem?