Since May of 2017, we’ve deployed around 145 of the Fujitsu Stylistic Q616. All of them use cellular data, overwhelmingly via ATT and we use skylight (airwatcher) to monitor them. They have various feature versions of Windows 10 (1703 - 1803).
Until a couple weeks ago we’ve had no problem. Then, we had a VZW tablet display the “Device Safety Mode | Temp” status on Skylight. In that instance I replaced the SIM and it seemed to work fine after that. We chalked it up to an error with VZW and moved on.
In the past week I’ve now seen 8 instances of this same problem with ATT Sims. We’ve made no changes to the OS or software installed. When the problem is occurring the network status pop up (from the networking icon in the system tray) displays the cellular status as “cellular 2” (or similar) instead of “AT&T (4G LTE) Connected” (for example).
My solution thus far is to reinstall the Sierra Wireless WWAN drivers offered on the Q616 Support page. It works, but the solution is mostly temporary. Sometimes multiple reboots work at keeping it running for a while. We’re also looking at installing new SIM chips, and so far, a little buggy but that might have something to do with it. But why…? I did see on a Lenovo forum that the “Temp” referred to temperature? That the modules are prone to overheating. But why now, 14 months later, randomly, out of the blue?
We used Dell Latitude netbooks with WWAN/SIMS for 7 years and never had a problem like this.
This is a very disruptive problem which could end up being very costly above and beyond the time spent fixing it. All of our users are remote and some don’t have consistent access to reliable wifi further compounding the issue. Fujitsu is, well… Fujitsu.
Has anyone seen this? What causes it? What is the solution? We can’t be the only ones.