When I plugged in my iPhone today, this message came up:
I innocently clicked on “Update Settings” and my data connection stopped working. Seems like Airtel is using a different APN setting so that only authorised iPhones can be used with it. Since the APN settings are hidden in iPhone firmware 2.0 onwards, the only way you could modify that is by using the iPhone configuration utility. I took the easier route of restoring the firmware.
Related: Reducing the iPhone 2.0 backup time.
