Go to: Settings > System > About Phone > Status > IMEI Information
You can also dial *#06# from your phone dialer.
Once on the IMEI page, please use the the IMEI number on slot one when submitting a support request. This will be the same number on the outside of the box that you received your device in.
For details related to the RED KOMODO 6K discount for HYDROGEN ONE owners, click here.