So I just bought my Xperia Ion from a Sony store and it is locked to AT&T. I knew that before I bought it and I was planning on unlocking it to use with my T-Mobile SIM card. But it is becomign more difficult than I though, none of the online unlocking companies has been able to provide me with an unlocking code, they have just returned my money. Does anyone know if there is any other way I can unlock it? I was ready to get rid of my Xperia X10...but now the Ion is just sitting on my desk waiting to be unlocked...not fun at all haha!