You can try:
- ubus call gsm.modem0 get_signal_query
which returns something like below:
{
"net_mode_id": 21,
"net_mode": "LTE",
"rssi": -55,
"rsrp": -87,
"sinr": 2,
"rsrq": -15
}
then grep and cut whatever is necessary for you.
Next, if by revision you mean firmware, execute the command below:
- ubus call gsm.modem0 get_firmware