Ok so I am supposed to buy a used T-Mobile Sidekick 4G today for $75 from a guy on Craigslist but it is not unlocked (hence the low price) the problem is I use I-Wireless and do not know how to unlock the phone so it can be used on I-Wireless. Can someone help me out please? By the way I-Wireless is a T-Mobile affiliate so I’m sure it can be done.