Cellular providers are companies that offer mobile phone services, allowing users to make calls, send texts, and access the internet on their devices. They operate through a network of cell towers that transmit signals to and from mobile phones. Common cellular providers include Verizon, AT&T, and T-Mobile. These providers typically offer various plans, which may include prepaid or postpaid options, data limits, and additional features like international calling. Customers choose a provider based on coverage, pricing, and available services, ensuring they can stay connected wherever they go.