The ‘dongle’ itself is a small ... similarly to how your phone connects to a mobile network, as they use 3G, 4G, or 5G networks to provide internet connectivity for your device.
That means you get speeds of up to 220Mbps, which should be enough for most mobile tasks that require an internet connection. TCL’s Linkkey IK511 is about as big as a 4G dongle, which is ...