HM-M02 4G configuration

Hello, i am trying to configure communication of the gateway through 4G. There are no options for APN or other 4G credentials. I am using 4G SIM card with no PIN code. 4G interface (usb0 in ifconfig via SSH) is connected and has IP adress, but there is no communication to the Chirpstack server. When ETH cable is connected, communication will immediately start. Is there any manual / hints how to communicate via 4G?

Sim card inserted to smartphone works and has data.