Sony Ericsson Z750
It is easily unlockable
There are almost no internet services that can do this online by the usual means of sending a code in return for your IMEI. The ones that I have found all ask for huge charges and make you download special software and use a cable to flash it with new firmware. Actually this isn't necessary at all.
The phone is unlockable by calling AT&T and getting the unlock code. The tricky part that is so unusual about thi...