Anime Cartoon

What devices should do, and what they actually do, are two very different things! As you've probably heard me mention countless times, many of those screens get information in a proprietary manner directly from the modem; apps like SignalCheck can only get what the OS is reporting. I did find your earlier reports, and as I guessed, the OS was reporting valid signal strength. I will try to figure out a solution.

Service mode shows the SIM as having no service, so I would think the device should report that. I believe I sent a diagnostic report a little while back—can you check to see if you have it?