This topic contains 1 reply, has 1 voice, and was last updated by Sudi 6 years ago.
- August 16, 2012 at 4:10 PM #4167
I’m new to iphones. My 3GS was used by someone who had the same carrier as I had. He restored the phone before he gave it to me. I tried to activate it using my SIM card and it came up with a message “there is no SIM card installed”. Long story shorter my carrier said to have it unlocked and see if that worked and it did and I can use all aspects of the phone running 4.0.1. The company that unlocked the phone says I can’t upgrade it or I’ll have to have it unlocked again. Is this true? Is there a fix for this? Most apps won’t run until it’s upgraded.
- June 13, 2013 at 7:16 AM #15370
I’m afraid it’s true. Everytime you update your iOS using iTunes it also restores the device back to factory settings. As the iPhone was originally a Locked phone, it reverts back to the Locked state. However why should that stop you from updating your iPhone ? Update the iOS and contact the carrier to Unlock the device again.