Gather the following details.

What is the ICCID of the SIM in this device?

ICCID:

What APN do you have set on the device?

APN:

Has this device worked in the past?

Add details here.

What is the make and model of this device?

Device Manufacturer and Model

What is the IMEI of this device?

IMEI:

What is the firmware version that this device is currently using?

Firmware Version:

Are you able to remotely or locally access the device?

Yes or No

Where is the device located?

Nearest Address or Coordinates

What cloud management portal are you using?

Cloud management portal

Are the antennas securely attached?

Cellular Main and Cellular Diversity

Is the SIM seated in the device correctly or is this an eSIM?

SIM Detection Status

Is there anything obstructing the device signal from the nearest tower?

e.g. trees, concrete buildings, metal enclosures, etc.

Has something changed recently?

e.g. natural disasters, firmware updates, new environment, etc.

Internal Check: Is the device certified by the carrier?

Certification Status:

Internal Check: Is there coverage in that location?

Coverage Status:

Internal Check: Is there an outage at this location?

Network Status:

Internal Check: Is the SIM/Comm plan compatible with the device?

Compatibility:

Internal Check: What bands are supported by the device?

Supported Bands:

Internal Check: What is the LTE category of the device?

LTE Category: