Unlock codes for a Sony Ericsson ST18i Xperia Ray
One common unwanted feature among all smartphones is their SIM lock. Most network service providers ask the mobile manufacturers to put a lock on the phone so that it cannot be used on any network but the one it was sold on. But this is far easier than it may seen to remove, with just some simple instructions, an unaccepted SIM card, and an unlock code needed to remove it. It will not only allow you to choose which network service provider you go with, it will also increase the resale value of your phone!