The first step to activate your SIM for service is to provision it within the Aeris system. This is easily done from AerPort and once provisioned, your SIM is network ready. After the SIM is provisioned you will need to configure the APN within your device to access data services.
SIMs can also be provisioned and activated in batches of up to 10,000. See additional details about provisioning SIMs in bulk in Multiple Device Provisioning.