Buyer wants refund on ebay, iphone 4s says phone needs flashing?

Hiya,

I sold an iPhone 4s on ebay, I was using it for 2 years and it worked perfectly. I listed all defects honestly, said the phone was bought as seen and no refunds.

He seems a bit crazy to be honest, I've never had so many messages from a buyer (around 20) asking for feedback repeatedly and telling me to confirm postage etc etc

He received the phone, sent insured via royal mail, then said it wouldn't work with his SIM card, again I had listed the network and he says he was also on T Mobile. He now says the phone shop told him the phone needed flashing which I've never heard of. I said I would only consider a partial refund if he sent me a receipt of this repair as it all sounds like rubbish to me.

I know what ebay are like for siding with the buyer but this particular one sounds insane, Please Help!

IPhone 4S doesn't need to be flashed for using on T-Mobile since T-Mobile is GSM. I think the phone shop is going to rip him off or he's trying to get some refunds. Tell him to mail me if any problem's there in the phone. I can help.

Oh Brilliant, thank you so much. I'll give him that information and then if he carries on I'll send your email add over. I don't understand how it doesn't work with T mobile either! I was on it for 2 years.