I think Crystalsky works with USB 4G/LTE dongles. So yes you can connect Crystalsky to a Cellular network but you need to buy the USB dongle first from the network provider I guess.
CrystalSky is compatible with 4G dongles, we recommend MS-2131i-8(3G Global), 2372h-153(4G for Russia/Europe/Middle East/Africa) since these have been fully tested.