Possible Cause 1

Outside cellular coverage range.

Suggestion Solution

Move the Automation Hub to a location with better cellular coverage or clearer line of site to the nearest cell tower.

Possible Cause 2

Cellular antenna is disconnected from circuit board.

Suggestion Solution

Ensure the cellular antenna is securely snapped onto J3 on the modem circuit board on the bottom of the main Automation Hub circuit board.

Possible Cause 3

SIM card is missing or installed incorrectly.

Suggestion Solution

Ensure the SIM card is securely clicked into place in the SIM card slot.