Codes2unlock provide a network unlocking service for mobile phones. The response time for providing you with an unlock code is quoted as about a couple of days. If you ask very very nicely they may even provide the unlock code in a day, which they did for me. The instructions for entering the unlock code into your phone are full and accurate except for a "silly girl" like me. The other service provider SIM I was using was sim locked with my password. I had forgotten that and when I enter the NCK code supplied it failed to network unlock the phone. I contacted Codes2unlock stating that their code didn't work. Their email responses to me were quick and full of further information. As I had "2 attempts left", I tried to unlock my phone again. This time when I entered their unlock code again it failed. When I looked carefully at my phone screen it stated that the SIM unlock code had failed. I entered in my correct SIM PIN, got taken to a network unlock screen and then entered the unlock code supplied by Codes2unlock and immediately my phone was network ulocked. Thank you Codes2unlock. The price and service of these people is excellent.