I have a EC200A-CN and would like to use it with the Nano Pi Core Neo.
I tried the steps here: Quectel Linux USB Drivers Troubleshooting
However, I was only able to get 2 TTYUSB and they were binded to TTYUSB2 and TTYUSB3. TTYUSB3 does take AT command via microcom.
Would like to seek some assistance on this matter.