How to change/switch from one Internet Service Provider (ISP)/SIM Cards to another ISP/SIM card on a Microhard cell modem

This article will walk you through the steps or confiruring a Microhard cell modem when changing SIM cards (switching ISP)

Connect to the cell modem (either with a direct Ethernet connection between a laptop and cell modem, or a remote connection to the cell modem using the appropriate VPN IP address), using the cell modem credentials (user Id: admin, pswd: opiblue) and select the carrier settings tab
In the APN field, change the current APN info to the new APN info, as an example we will change to Verizon APN.
Then click on the submit button, and then,
Check that the new SIM card (ISP) is working as expected (go to the system/summary tab):

Cell modem RF params should be at least acceptable/Fair according to the following table: