Avoid iphoneunlockusa.com and iphoneunlockuk.com is a SCAM I have a proof, they don't delivery what they promise, I'm fighting with my credit card to recovery my US$50.

They claim to be able to unlock the iPhone 4 and this is not true, they can't!!

Charging for Free Software

Avoid these sites, they are scam artists, the site looks nice and authentic, but it is a trap! I paid trough Dalpay and them don't have a option to claim a dispute as PayPal, I think that is the reason iphoneunlockuk.com don't accept PayPal, only dalpay.