Evening all,

As above, really, my current phone is an Apple-Bought unlocked 64GB iPhone 4s. I'm thinking about finally moving to either the 5 or the 5S. Given that my current phone is in Good condition and I wouldn't mind buying another in a similar state, I'm considering my options, of which I know relatively little, so any alternatives would be welcome!

It seems CeX will give me around £220 trade-in value for the 4S. Good condition phones on Vodafone are £350, and unlocked variants are £435 - is there any reason that could account for such a huge discrepancy?

Any other thoughts/comments would be gratefully received!!

Best wishes