Is this a good idea? With the next iPhone possibly being announced soon my one will decrease in value, so the idea of being able to exchange it now for a top of the line Android for £168 (edited, maths fail) is quite attractive. At the moment I could trade it in at CEX for £307 (an exchange voucher) and buy a grade A O2 Galaxy S3 for £475 (i'm on Giffgaff so my SIM will work). Any thoughts? I'm still thinking about following through with this, it's not definite yet, I just thought I'd ask what you guys think!
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