My iPhone (which I bought on eBay last year) died this week. After much searching on google etc. I managed to get it to connect to iTunes and do a restore to factory settings.

Problem is it now says my SIM (T-Mobile) is not compatible to activate the phone. Is there anything I can do?

Originally Posted by Zanziba

My iPhone (which I bought on eBay last year) died this week. After much searching on google etc. I managed to get it to connect to iTunes and do a restore to factory settings.

Problem is it now says my SIM (T-Mobile) is not compatible to activate the phone. Is there anything I can do?

If you have restored (at all during your troubleshooting) to OS 3.1.3 then you likely have lost your unlock (for now). Wait a few weeks..

Otherwise if you restored to OS 3.1.2 you can jailbreak with redsn0w or blackra1n to hacktivate and then reinstall blacksn0w for unlock.

This topic has been discussed many times. Search before posting. Thread closed.