So the device in concern is the iPhone 3S. It has been jailbroken in the past and I haven't really used it since. And now I decided to upgrade it so I restore it to factory settings, except there is a critical issue. The device claims that there is no SIM card inserted into it. I tried with multiple SIM cards and bought a new one too, just in case, and the phone continues to give the same message. I am locked in the screen in which the iPhone is to be connected to iTunes. For Apple servicing, I need the index number, for which I need to start the phone and go to Settings, but this phone is completely locked. I tried re-inserting the SIM many times but there seems to be no change. So far I have done the following:
- Determine the language
- Country of usage
- Choose a WiFi network/ connect to iTunes. And that's all.
This question is similar to one asked before, but I have tried the tape as well and it lead nowhere. And I don't have an AT&T SIM.