Mobile broadband is high-capacity internet access delivered over cellular radio networks such as 3G, 4G/LTE and 5G, allowing devices to connect without a fixed wired line. It depends on licensed spectrum allocated to network operators and is provisioned through cell towers and core network infrastructure rather than fibre or cable to the premises. Mobile broadband underpins smartphone data access, fixed-wireless access, and IoT connectivity in areas where fixed broadband is unavailable or impractical.