AIO-6 Max does not have a SIM card slot and cannot be modified to support one. Its physical design differs from other models, making it incompatible with SIM card insertion. If you need 4G functionality, please choose the AIO-6 LTE model that supports a SIM card.
Does the AIO-6 Max support a SIM card?
The AIO-6 Max has no SIM slot and cannot be modified for 4G; choose the AIO-6 LTE if you need cellular connectivity.