How to solve NO SERVICE ERROR on iPhone Try To Toggle 3G

If your iPhone displays NO SERVICE after you restore with iTunes please try this:

1. From the Home screen, tap Settings→General→Network; where it says Enable 3G, tap to turn it Off.

2. Now turn 3G back on.

PLEASE NOTE: THE SIM CARD INSTALLED IN YOUR iPHONE MUST BE ACTIVE TO SHOW SERVICE.