The US Mobile Light Speed sim works fine in my X3000 so if you have problems it may be something router related and not sim/carrier related. My X3000 is running the 4.7.4 firmware and the current recommended modem firmware from GL-iNet.
We you able to get the Dark Star sim working in a phone?
Working in phone: Today, I put the sim in a phone - it worked, and the APN autodetected was nxtgenphone (I believe this is an ATT APN). The phone did work using this APN.
I added an APN on the phone “ereseller” as required by US Mobile and switched to “ereseller”. The phone also worked with this APN.
I then took the sim and put it back in the GL-X3000. It connected right away and appears to be working fine using the “ereseller” APN - which refused to work yesterday.
And now: I’ve twice had the router stop providing internet access, although it shows to be connected and fine. The first time, a restart brought it back online. The second time, the interface says “The interface is connected, but the internet can’t be accessed”.
Do we have an IMEI block going on here?
Edit: US Mobile says the IMEI is not blacklisted. But nothing else is making sense. Unless there’s some modem incompatibility. Open to any further help…