Where do Ebay sellers get faulty mobile phones, you will find some with 100 or more Samsung and Iphones?

When your contract phone goes wrong, you send it back and they replace it. They then sell them as a job lot to the trade. Someone buys a load of dud phones and refurbishes any that can be mended. Then the really dud stuff they sell on eBay. People will buy them so they can transfer the IMEI onto a stolen phone. And no I'm not going to tell you how to do it.

They probably and likely had companies or are friends with companies employees that has recycle cordless phones or pending cordless phone that they are about to fix

people are selling thern that way when they shouldnt be