The APN is the “Access Point Name“, a code you will need to set at a device level to start using data. Your device can register to a network even if the APN is incorrect but will not be able to pass data.
To find what APN you need to add to the device when you activate a sim you can search for it in the portal:
Go to “All Subscribers”
Search for your SIM card (enter your ICCID number)
Click on your SIM card and “Run a Sim Diagnostics”
Check the “Data Services Info” in the UI. It will indicate what APN you need to use.
APN example: data641003
For more information or questions please email simhelp@lantronix.com