Your ‘Blu Zoey 2.4 3G’ cell phone has two SIM card slots but only one SIM card is required in order to use the Mobal service.
The Mobal SIM card has been pre-inserted in Slot 1 and Slot 2 is currently empty. Therefore, it is normal to see an “Insert SIM 2” message and this can be ignored.
Please note slot 1 is 2G/3G, but slot 2 is 2G only. To avoid limited coverage the Mobal SIM should only be used in slot 1.