If you want access to unlimited mobile data on your devices, many providers have different packages available. You should be able to get an assortment of mobile internet devices from large telecom providers. These include mobile internet sticks, portable Wi-Fi hubs and mobile phones that can hold a hotspot.
Unlimited mobile data plans are also offered by many providers, though you'll typically get throttled speeds once you reach a certain level of usage. That's why a fixed-line connection is usually the most practical choice in situations where a mobile connection isn't essential.