Phone froze and came up with with the apple logo.
I have a regular Iphone 4. I was on Facebook and my phone froze for about 10 minuets. Then it came up with the black screen and apple logo. Its been like that for over 3 hours now. I tried restarting it with the home button and sleep mode button. It takes a screenshot. I had my mom call my phone, it still plays my ringtone but when it lights up all I can see is the apple logo. I can hear when I get a message it still is making noises but I cant see them. What can I do? I was just going to let it die but I'm just worried about it.