I have an Iphone 4S which was locked to AT&T running on 6.1.3 this phone was never used hence it was never activated even with At&T SIM.
I tried to use X-SIM to unlock but the activation failed "Could Not activate the Iphone"
I even tried IEMI unlock by some 3rd party vendor after IEMI unlock when I insert regular sim it doesn't give "INVALID SIM" error
however the activation still fails.
Now I'm stuck with this activation Screen.
Tried even Itunes to downgrade to 5.1.1 it didn't work either.
You need an AT&T sim to activate with.
There is no way to 'hacktivate' a 4S.
There is no way to downgrade or jailbreak 6.1.3
answered 09 Apr '13, 13:59