I want to sell my iphone 4s 16gb on ebay or amazon but i haven't sold a phone on either before. It is in very good condition and functions perfectly but I have a few questions: -If a buyer were to receive it and then smash it (by accident or whatever), what would stop them saying 'it arrived like that', how can I prove that the iphone sold was in fine condition? -If the iphone randomly dies 1 week/1 month/6 months later, would I have to offer a refund? I know the phone is in perfect working order now but im not that much of a techy, the phone could stop working tomorrow for all i know. how long do you have to be liable for a refund? Obviously if i was the buyer i wouldn't be happy if i paid 200 odd and the phone broke a month later. I just don't quite understand how it works, any help would be much appreciated I know this is worst case scenario but id rather get £80 less with a recycling company rather than be duped and end up with a broken iphone and owing refund.