I need to know a couple things regarding T-Mobile's wireless coverage: 1.) Have they yet completely farmed their 3G network coverage? 2.) Have they completely rolled out their 4G HSPA+ network coverage? 3.) How's their coverage in the midwest (specifically Illinois/Chicagoland area)? I used this website as a general guideline, but I'm still not sure how accurate that map is. I'm not even sure if that map includes data coverage or if it only showcases their voice/text coverage: http://www.t-mobile.com/coverage/pcc.aspx Additional questions regarding T-Mobile: 4.) Can the iPhone 4S tap into T-Mobile's 3G network? Or would I be stuck with their 2G edge (even though they're refarming 3G/4G)? 5.) Are there any carriers that offer an iPhone 4S that is compatible with T-Mobile's 3G network? In other words, if I want to purchase an iPhone 4S to use on T-Mobile's 3G network (assuming I even can), can I get a phone from another carrier (for cheaper) and then unlock it at T-Mobile, or do I have no choice but to buy a factory unlocked device? If anyone can answer any of these questions even partially, it would help a great deal. Thank in advanced, guys.