What Is an IMEI Number?
IMEI stands for International Mobile Equipment Identity. Similar to an ESN, every phone has a unique IMEI, much like every person has a unique fingerprint. IMEI numbers are used for GSM phones and function similarly to MEID numbers used for CDMA devices.
Carriers use IMEI numbers to track account status, check for past-due bills, and verify whether devices have been reported lost or stolen.
How to Find Your IMEI
You can locate your IMEI number in several ways:
- Dial *#06# on your phone’s keypad
- Check your phone’s Settings menu (usually under “About Phone”)
- Look on a label underneath or beside the battery
- Check the original device packaging or purchase receipt
IMEI Format
- IMEI numbers are 15 characters long, consisting of both letters and numbers
What Is a “Bad” IMEI?
A “bad” IMEI means the device cannot be activated on the carrier’s network. This typically occurs due to overdue account balances or previous theft reports.
How to Check If Your IMEI Is Clean
Before buying or selling a used phone, always verify the IMEI is clean by contacting the carrier (call from a different phone):
- AT&T: 1-800-331-0500
- T-Mobile: 1-800-866-2453
Sell Your Phone Today
Once you’ve confirmed your IMEI is clean, get an instant quote from TechPayout. We buy over 500 different devices and offer free shipping on every order.