I am trying to replace the functionality of a Netgear LG6100D LTE gateway because of it’s numerous bugs, shortcomings and End Of Life (support) status. I want to use it as a remote link to another property. One of it’s problems is that it drops the 4G LTE connection and will not automatically reconnect the link. So, when the link drops, it’s dead in the water. From the look of the 4G LTE card in the LG6100D, it’s a custom-made Sierra Wireless card rebranded as a Netgear NM7371 card.
I’m trying to get a standard Sierra Wireless MC7355 to work as the 4G LTE radio link of the replacement system.
I have an MC7355 in a WWAN card to USB adapter (with SIM slot). I’ve already successfully updated the MC7355 firmware to the latest Sprint-verified firmware build 4837. (9999999_9902350_SWI9X15C_05.05.63.01_00_SPRINT_005.037_000.exe)
What SIM card model numbers are the “correct” SIM card for the MC7355 on the Sprint Network?
Is there a online database or list that shows this SIM card information?
Yesterday, I moved the current/provisioned SIM card from the Netgear LG6100D into the WWAN card to USB adapter and found that the MC7355 DID connect to the Sprint Network, get an IP address and pass Internet data! But, the data connection only lasts for about 3-4 minutes and then drops. The only way to get it to reconnect is to pull the USB cable, and repower MC7355 card. Then, the MC7355 connects to the Sprint Network again and keeps a data connection for 3-4 minutes, until the connection drops. Repower and repeat cycle.
I contacted Sprint Support via a text chat on their website that they tried to activate the MC7355 but they were unable to get the MC7355 activated so that it would stay connected longer than 3-4 minutes. They suggested I take it into a Sprint store. I seriously doubt anyone in a local Sprint store is going to know what to do with the MC7355 card. I’m guessing one of the first things they’ll do is try and pair it up with the “correct” SIM card, and try again. And, they’ll have to order it from another Sprint location, in another city, so there will be another delay in the process.
So, what is the correct SIM card for an MC7355 on the Sprint Network, and where do we look up that information?