Ios 7 4s sound issues no sound via music player

[ider38]

Hi just updated to ios7

Speaker make No sound in music player

Volume slider is not functioning at all , it's grey

Ringtones works fine.

And back to iphone - no sound

Also tried another music player same **** - plays no sound

[Canker_Canison]

Put it DFU or recovery mode & connect it to itunes. It will flash the phone again.