An Electronic Serial Number (ESN) is a unique identifier assigned to every CDMA mobile phone. It is used by the carrier to identify the phone and track its usage. When you purchase a used phone, it is important to check the ESN to make sure that it has not been reported lost or stolen.
There are a few different ways to check the ESN of a Sprint phone. One way is to call Sprint’s customer service number and provide them with the phone’s ESN. Another way is to check the ESN online using Sprint’s website. You can also check the ESN by dialing *#06# on the phone’s keypad.