How Do I Disable/Enable LTE On My Forerunner 945 LTE?

By default the LTE feature on your watch will be in standby mode unless you trigger a feature on the watch that turns LTE on such as manually syncing with Garmin Connect, starting a GPS activity, or triggering a safety feature such as Assistance, Assistance Plus, or Incident Detection. 

To turn the LTE feature on  your Forerunner 945 LTE off or back on following these steps:

1. From the watch face, press and hold the Up button (middle left button) to pull up the menu.
2. Use the Up/Down buttons on the left side of the watch to find Connectivity.
3. Select Connectivity with the Start/Stop button (top right button).
4. Move down to LTE and select it.
5. Select Status with the top right button until it is set to either Off or Standby.