I work in the endurance sport race timing business. We use Hologram to help send runner, biker, and swimmer time of day stamps over the cell network and collect that information in a program on our laptops.
The device we call a controller has a built-in module that allows us to drop a SIM card into and we then configure some APN settings so we can send the information we want from the controller to our laptops.
Over the past 7-8 months, I have always used the APN = hologram. But more recently that APN seems to not work. Just testing things out, I changed the APN to = Broadband (what you would normally use for AT&T). The controllers seem to like that APN and they connect with no issues.
Has anyone recently run into this, or am I an isolated event?