Method 7 of 7: From an AT&T account login

1

Log into your AT&T account on the website.

2

Hover over the Profile link and click on 'Update My Profile'.

3

Select the tab that reads 'User Information'. After clicking this, if you have multiple devices on your account, you have the option to switch between the phone numbers.

4

Scroll down slightly and click on the link that reads 'Customer Service Summary & Contract'.

5

Click on 'Wireless Customer Agreement' when the window pops up,. A PDF download will begin.

6

Open the PDF. You should recognize this paperwork from when you first purchased your device. Scroll to the very bottom of the PDF and you will find your IMEI.

Tips:

• Write your IMEI down before your phone gets lost or stolen.
• If your mobile phone is stolen, you can call or go to the nearest service center of your mobile network and give that IMEI number to staff to block your phone.
• Most pre-paid and non-contract phones in America don't have IMEIs; the same applies to disposable phones throughout Europe, Asia, and Africa.
• If you are South African, you are required by law to report the theft to your service provider and to the police (either SAPS or your local Metro Police). It will be blacklisted across ALL networks so that it can't be used for criminal activities. If it is recovered, it is possible to remove from the blacklist it provided that you have proof of ownership.

Warning:

• Blocking a stolen or lost phone via the IMEI will cut off all communication between your phone and your carrier, making it impossible for the phone to be recovered via tracking. Only do this as a last resort if your phone contains sensitive information.
• Some thieves replace the IMEI numbers of phones they steal with the IMEIs of other devices. If you purchased a phone from someone or someplace you don't quite trust, try to research whether or not your supposed IMEI actually goes with that model of phone.

You have some illegal fraudulent companies that will replace your IMEI code so that the carrier like AT&T can't track it. AT&T will tell you, that's impossible but it's happening to me. They manipulate the code so it's telling AT&T it's black listed but the code is changed and can not be traced (IMEI) so even if you do put it on the block list. It will still work, It is happening as we speak