Can I trade in my iPhone 4 for an iPhone 4S?

I got my iPhone 4 in April or May, and it's still under the 2 year warranty, and with the iPhone 5 coming out, I was wondering if I could trade in the 4 for the 4S

Well if your iPhone is in perfect condition and looks brand new you could trade it for maybe a iPhone 4s that's you can tell is use.

Just keep the phone… Before you know it you'll break the 4s when you get it

Nope. The 4 is $150-$175
the 4s is worth $250, no place will take that trade.