I had an AT&T locked iPhone, from the United States, I just moved to France and wanted to use a network in France, SFR or Orange.
After a long battle with AT&T I gave in and started looking for third party solutions. I was on a baseband that to this date had not been hardware unlocked so and IMEI unlock was really the only option available. Through a series of google searches I arrived here (
http://www.officialiphoneunlock.co.uk) I was skeptical but after doing some research I found it trust worthy enough to try.
I must note that every person who reviewed this company only had one review, I realize now as I write this review that is because the unlocking company offers a 2.50 rebate for anyone who leaves a review
This service was quick and decently priced. 35(pounds) about 50 USD. Being an older phone my request was processed within 12 hours and phone within another 12, on a Sunday I might add. The company provided a couple extra steps in the follow up email to complete the unlock on my side which I followed and worked and my phone is now happy functioning on the SFR network.
I will admit I was skeptical at first but this company has come through and done what they advertised. It's nice to see a legitimate company proving a good necessary service.