(2) Click Erase All Data on the software and then click on Erase. It’s very rare to try all the above and still come up short.
In our experience, i Phones that have been jailbroken or tampered with in other ways usually have the activation problems.
This will work only when the problem is an error from Apple’s activation server.
Also you can always contact Apple care or the carrier of the Sim card you need to use.If your phone is not unlocking or getting signal, PLEASE perform the backup/restore once again (above).Sometimes it takes upto 3 times to get it provisioned and unlocked. Best way is by putting in a GSM (NON supported sim) and seeing if you can dial out.Before providing the solutions, it’s imperative to also understand why it occurred in the first place.As reported by most users, the activation issues arise immediately after the download has taken place and they can’t sign in.