Mobile carriers are companies that provide wireless communication services to consumers and businesses. They enable users to make phone calls, send text messages, and access the internet through mobile devices like smartphones and tablets. Major mobile carriers often operate their own networks and offer various plans, including prepaid and postpaid options. These carriers use different technologies, such as 4G and 5G, to deliver services. They may also offer additional features like data plans, family plans, and international roaming. Some well-known mobile carriers include Verizon, AT&T, and T-Mobile, each with its own coverage areas and pricing structures.