A7670G with GPS antenna. GPS not working

[SmartTracker]

I bought A7670G with attached GPS antenna. I tried several different examples but when call command AT+CGNSSPWR=1 it returns ERROR. I read somewhere that this device has no built in GPS. I tried two examples such GPSShield and GPSBuiltin. If this is the case that the A7670G doesn't have a GPS why the board has GNNS connector and attached GPS antenna??

[teastain2]

@smarttracker Is this your board?
https://www.lilygo.cc/en-ca/products/t-sim-a7670e?_pos=1&_psq=A7670G&_ss=e&_v=1.0&variant=42737494458549
Some are purchased for less cost without GPS. GPS is a added cost option.

Sorry if this is not helpful to your situation.
The A7670G is a LTE cellular chip.
-Terry