Its easy to do, its cheap and its quick. You don't need to be an expert on phones or a tech genius to use the software, it's real simple. Switch your phone off, take your SIM card out, switch back on after running the app. When I got the email, I then got a pdf with easy instructions, this is because my phone couldnt be unlocked my code so i had to use the program. Then switch it, off then on again and itll pick up the new network. Done.