Seeing something weird on my FX30S-LTE that I can’t figure out. I have 2 modems, one with an AT&T account and the other with a Verizon account. I have both modems running my app successfully, both connecting on LTE to a server over the cellular network and passing data back and forth. I have had them running like this over the weekend with no interruptions and no problems. Most of the time after I power cycle the modems, they boot up and my app starts no problem, except that they can no longer connect to the server over the cellular network. I check that the modem is registered, that the RAT is set to LTE, that the data connection is establish and I have an IP, that the APN is configured correctly, and that the signal strength is good. Still no connection, and I get a perrno 110 - Connection Timed out from a connection attempt.
No matter how many times I cycle the power on the modems, I get the same results. But, if I switch the SIM chips between the 2 modems, then all of a sudden after rebooting, they begin communicating again. They continue working great until I recycle the power, then the same scenario starts all over again.
I don’t have a clue as to why it is doing this. Any help in troubleshooting is appreciated. Thanks!