How Do I Find My Device ID?
If you are using an Apple mobile device, you can find your UDID by connecting your device to iTunes. Within iTunes, click on your specific device, then click on “Summary” for that device, and then click on “Serial Number.” You will see “Identifier (UDID).” Please enter that 40 character identifier on the Opt-Out page.
If you are using an Android device, go to the Settings menu in Android, select About Phone, then select Status or Phone Identity. This screen will show you a MEID or IMEI value. Please enter that number on the Opt-Out page.
If you are using a device that is not on an Apple or Android operating system, we are not able to instruct you on how to find your Device ID at this time. Please check back with us, as we are continually working on enhancing tools for user choice.