I bought my phone in canada (when I was living there) and had to move back home to the uk. Unfortunately no British Sim cards would work in my phone because the phone was locked. I went to many unlocking stores in the uk but had no hope! I tried this online and figured that I had nothing to loose. I checked my emails hourly to see if anything had come through and as promised it came on the 23rd hour (they promise it would be sent withing 24 hours) and to my amazement it worked! I am absolutely over the moon. This has saved me a huge amount of money as the next step was buying a new phone. I highly recommend and thank you so much! I am once again a social butterfly.