A Radio Access Network (RAN) is a crucial part of mobile telecommunications systems. It connects your mobile device, such as a smartphone or tablet, to the core network using radio signals. The RAN includes cell towers, antennas, and other hardware that transmit and receive data between users and the broader network. This enables you to make calls, send messages, and access the internet wirelessly. RANs are essential for mobile connectivity and play a key role in technologies like 4G and 5G.