Bought an iPhone6 (from CeX Manchester)but it was slow so I stop using it. Try to sell it a year after, got told the buying price will be £70 in cash or £120in voucher and of course will need to do a phone test first. I came back and got told it failed the frequency test (so basically they sold me a failed phone first of all). Then they apologise and explain it was still within 2 years warranty so they can sort it out for me but will need to do the testing again which take 10mins, came back and told me will need to do another test for 15mins. Finally, they got everything done, I literally waited for more than an hour for the whole process. However, when they gave the cash, it was only £29.10. I explained I was told for £70, then they told me they are buying to fix not sell so it got reduced.