If it is an android I believe you dial *#06# in your keypad and it should appear on your screen.  Had to do it recently for my insurance.

If it's an apple phone it's somewhere in settings but I don't know where.

Hope this helps.

Hey there @CarlSmith74, thank you for reaching out.

If you are unsure of your IMEI number, and no longer have the box the phone came in, then you should be able to go into your phone’s settings to find it.

Thank you,

Tyler