this decision as Huawei is the sole provider of the rural 4g broad band devices and a bulletin was released by the NZ GSSB to block the 5g rollout with Huawei hardware but users are forced to use Huawei devices on the 4G RBI network, security concerns have been raised, as the devices are capable of over the air updates. See also IMSI External links 3GPP Change Request re Type Allocation Code Check Detailed information about the IMEI Number GSM standard