Simply put, a bad ESN* means the phone or device has been blacklisted or locked for some reason and can not be activated.
It might seem like a great deal, but buying a cell phone with a bad ESN is a bad idea. Once a phone is blacklisted, it is problematic
to get it activated again. So if you've bought a smartphone with a bad ESN or bad IMEI number chances are you have a very expensive
brick/iPod/extra drive on your hands.
What makes an ESN bad?
An ESN/MEID/IMEI number can go bad for any one of three reasons:
The phone is still active on the owner's wireless carrier account.
There is money owed on the wireless carrier account to which the ESN/MEID/IMEI is connected.
The phone was reported lost or stolen in the past.
Regardless of the reason, only the owner of the wireless account to which the phone was connected can clear the ESN/MEID/IMEI number.
The Bottom Line
When you buy from the MaxBack Marketplace you are getting a gently used, extensively tested device. All cell phones have a clean ESN and are
ready to activate guaranteed!
*ESN is an Electronic Serial Number used to identify the cell phone. You may also have heard other acronyms like MEID (Mobile
Equipment Identifier), or IMEI (International Mobile Equiment Identity). They pretty much mean the same thing; it's a way for the
carrier to connect the cell phone to the account.