Minicom on pinephone to troubleshoot quectel modem?


got a pinephone recently and i’m having some problems with the network cellular connection which disappears intermittently. following this info,[won’t let me post link to wiki.pine64], i would like to follow the instructions at VoLTE and the command "AT+QMBNCFG=“list” to actually see the list in order to troubleshoot my problem. i downloaded minicom but when i start it, i get stuck at ‘serial modem set-up’. i’m not even sure what device the quectel modem is. the command ‘minicom -D /dev/ttyUSB2’ from the wiki link gives me 'no such device. i’ve posted at the pinephone forum but have not received a reply as of yet. any help would be appreciated. thanks.

p.s manjaro-arm 5.12.2-2