Replaying to myself:
To get iIP information use the following:
# mmcli -m 0 -b 1
--------------------------------
General | dbus path: /org/freedesktop/ModemManager1/Bearer/1
| type: default
--------------------------------
Status | connected: yes
| suspended: no
| interface: wwan0
| ip timeout: 20
--------------------------------
Properties | apn: darmowy
| roaming: allowed
--------------------------------
IPv4 configuration | method: static
| address: 100.83.243.37
| prefix: 30
| gateway: 100.83.243.38
| dns: 212.2.127.254, 212.2.96.52
| mtu: 1500
--------------------------------
Statistics | attempts: 1
