Thanks for the response. I believe you’re correct about the time and date. There is no battery support for the real time clock on the XM0110 module. The idle mode seems to work well, but only if you keep power to the modem itself (I’m using an FXT009). This is an in vehicle application so I’m going to try and use an ignition input and put the FXT009 to sleep as well as the XM0110 into idle mode. My concern about putting the FXT009 to sleep is that the modem may crash and never recover. If that occurs, it’s a huge deal to get the modem power cycled.