ok yesterday i sold my iphone 4 outright. the guy looking at Insisted i remove the sim card holder. i asked him why? he said to match the IMEI number and serial number to the box. well they did not match because apple replaced the iphone under warranty. i was not aware that the IMEI and serial number was on the sim card tray/holder. i was asking 250$ for my iphone 4 i got like 20 emails in the first hour i listed it on craigslist. after he found out the numbers did not match he tryed to LOWBALL me.i said no thanks i have like 15 other ppl in line wanting it. so he bought it. but he told me he never owned a iphone before,i was thinking if have not had a iphone before how did he know about the serial # and IMEI #!! on the sim holder. i did know about this. so i checked my 4S and it matches whats on the back of the box. any one else know about this?
if your Iphone gets stolen this is a way to id it just keep your box.