I was quite baffled about it too... but it was likely someone from another country using a stolen credit card so they wanted to get the phone fast which I don't

I was quite baffled about it too... but it was likely someone from another country using a stolen credit card so they wanted to get the phone fast which I don't think was very available in other countries at the time. They couldn't ask me anything more after eBay banned their account. Aside from not being able to touch the money anyway, another reason I walked away and waited a year before checking Paypal again was because I figured I might receive an email stating the decision was reversed and I would hear from this person again. They wouldn't have anyway to contact me otherwise. ebay still has a very strict policy about sharing emails through messages. I was 17 at the time and it was my first sale on eBay so I didn't fully understand what had happened then.