Quote Originally Posted by swindlerz View Post
hey would this be illegal if i can copy a imei i a phone i own (that is working) and change the k750 imei to with a working imei?
if it works anyone know how to do it?
It doesn't matter that the imei number belongs to a phone that you own, it's still illegal in the UK to alter the imei number on a phone.

Phones are more often blocked by the network operator if the handset has been lost or stolen, so contacting SonyEricsson wouldn't help. If you knew who the original network on the phone was from your friend's Uncle you could always contact them and find out as harper1988 suggested as it could have had it's imei blacklisted by mistake.