IPhone 4S keeps vibrating and lighting up! Help!

Since installing the IOS7.2 update, my iPhone keeps vibrating and lighting up as if I have a text but nothing comes up! I have no new texts, emails, missed calls, voicemails, no notifications of any kind! It is driving me mad! What can I do to resolve this! Thanks!

I had the same problem, turns out after playing with the phone for a while it wasn't the phone but the charger, the cable in the wires I guess were damaged for a while and it vibrates every second. Buy a new one. Or test out the charger move the wires around and see if that's your problem if that doesn't help I guess resetting the phone to factory settings will.