Since I'm not using the cellular service, should I place the machine in Airplane mode?

Thank you for the information on SleepyHead. We only have Verizon cellular in my area, so that explains it. No AT&T signal here at all. I will check how to properly remove the SD card. I don't easily see the slot.

Hi All, My husband wears a CPAP. It's the ResMed and I signed him up on My Air online and on the mobile app. However, celluar coverage in our area isn't that great and we use a Verizon Network Extender in our home to be able to use our cell phones - it works great. Can I add this Cellular Modem to t...