I must admit I didn't expect the pin unlock to work, as Cellunlocker are based somewhere 8 hours behind UK time. I'd already spoken to my previous network provider (TMobile) who were asking £20. Cellunlocker were much cheaper and it was easy to follow their website and email instructions. It only took 10 minutes for the unlock code to be emailed back to me. It didn't work the first time, so I took out the battery and sim card a few times. After half and hour I re-input the unlock code and it worked. I'm really impressed with the service and would definitely recommend. Thanks