The term cellular comes from the way mobile networks divide geographic areas into smaller regions called cells. Each cell is served by a base station, commonly known as a cell tower, which provides radio coverage within its designated area. When you travel from one cell to another, the network performs a seamless handover, transferring your active connection to the new tower without dropping your call or data session. This cellular architecture allows networks to reuse the same frequencies across distant cells, dramatically increasing the total number of users the network can support.