Let me start off by stating that I am an iPhone neophyte. I have never owned one and just am not fully up on what either the 5 or 4s can or can't do. I have been reading articles on them, yet still don't feel that I have a grasp of it all. I am a casual smart phone user on the phone I have now which is the G2 Android phone. I love the GPS, use it for email, text and browsing a website here and there. Since I am on T-Mobile I would need to get an unlocked phone either the 5 or 4s. So my question is: Would I get the performance out of either version on T-Mobile considering what I use the phone for. Would it be better money spent to get the 4s since the price is going down or would I be better served by having the 5 on T-Mobile. Or..... Would I be better off expense wise just going to Sprint for my cell phone service that get the iPhone 5 on their service. ($79.00 plan) Also, I was interested in tethering... would I be able to do that for free on either T-Mobile or Sprint?