| one method also helpfull
1.before formatting backup your handset file .
2. now format it
3.dont rebuild or change imei piut sim on faulty set and check it is noservice or invalid sim.
4. if show invalid just rebulid or change imei
5. if show no service then flash with old backup and rebuid or change imei .
i have try this method and get success in most of them sets. |