Kick the iPhone out of simple restore/recovery mode and make it reboot.
1. Connect iPhone and your PC/Mac, quit iTunes.
2. Hold Start/Sleep and Home for 10 seconds (I always count 100, 200, 300,...)
3. Let go of Home button but keep holding Start/Sleep until the Apple logo on the iPhone screen shows up.
4. Let go of Start/Sleep, the iPhone will boot

Kick the iPhone out of DFU mode and make it reboot. I always disconnect iPhone and Mac/PC but can be done even when connected.
1. Hold Start/Sleep and Home until the Apple logo shows up on the iPhone screen. This may take up to 30-60 seconds.
2. Let go of both buttons, the iPhone will reboot.

ik denk dat je dit bedoelt