Hi guys. I'm trying to sell my older iPhone 5S on Craigslist and someone that is interested wants to see the IMEI number. I'm assuming so he can see it's not stolen. Is there anything bad that can happen by sending him my IMEI number?
I think he just wants to check the unlock status, but it's remotely possible that they could use that I information maliciously. I would send them a screenshot of an service from an alternate carrier in the upper left corner and the congratulations screen you get in iTunes when you unlock. If that wasn't good enough, I'd wait for the next buyer. I've had no problem selling unlocked iPhones on Craigslist and I never provide my IMEI over email.
If you sell on Swappa you must enter the IMEI so Swappa can verify the ohine's status before they approve your listing. The listing doesn't divulge the actual IMEI, bit it does say "clean IMEI" so the buyer knows he's not being hosed.