Written on: by johndoe999999 (1 review written)
Took some days to get my phone unlocked but worth it since my Cellular phone provider requested me to cancel my contract with them to be able to unlock my Apple iPhone.
If you are not in a hurry, GSMLiberty is a good choice. As soon as I received an Email confirming the phone (IMEI) has been registered as permanently unlocked on Apple's database, I tried with a different mini SIM card and I was able to receive/make calls with another Phone Operator.
Not cheap, but thanks to GSMLiberty....!