Phone service refers to the ability to make and receive calls using a telephone. This service can be provided through various technologies, including landlines, mobile phones, and Voice over Internet Protocol (VoIP). Each type of phone service has its own features, such as call waiting, voicemail, and caller ID. In addition to voice calls, many phone services offer text messaging and data plans for internet access. Providers, such as Verizon, AT&T, and T-Mobile, compete to offer the best coverage and pricing. Customers can choose from different plans based on their usage needs, including prepaid and postpaid options.