Confirm Device is Sending SMS

I’m hoping someone can help. We have 1 deployed device that was sending SMS to Hologram and triggering routes just fine. It has stopped sending text messages, I think. I show it is connected in the Hologram dashboard. When we trigger the device to send an SMS alert to trigger a route, the route doesn’t get triggered. So my questions are:

  1. Is there a way for me to see if the modem is sending the SMS alert?
  2. Can I send a message to the device from the dashboard that returns something that tells me it’s sending SMS?

Sorry for the newbie questions. I appreciate any help I can get. Thanks

One easy way to check is if you are being billed for SMS. Any MO (mobile originated) SMS we charge for so if its sending SMS you should still be getting billed for them.