First off, does an apple retail store take trade ins? For example my iPhone 4S factory unlocked? And another question is im thinking of getting the iPhone 5 on Sprint by signing up for them? Just wondering if someone can give me advice financially and the best thing to do in terms of the technical specifications. I currently have an iPhone 4s for tmobile but i feel like im not even getting nearly the amount of speed i should be getting. Thanks alot and i appreciate all the response and advice.