MikroTik with lte interface via USB tethering
-use your mobile phone as modem or internet source and plug it on your mikrotik USB port
MikroTik with USB Port (RB951Ui-2HnD testing unit)
usb to micro usb cable
Mobile Phone with Internet Access
REMINDER:
to have internet access on you lan or network you must change the nat masquerade of out-interface to "lte1" (source of internet)