A mobile service provider, often referred to as a mobile carrier or network operator, is a company that offers mobile communication services to users. These services include voice calling, text messaging, and data connectivity through mobile devices. Mobile service providers own and operate the infrastructure, such as cell towers and network equipment, that enables wireless communication.

Users subscribe to mobile service plans offered by these providers, paying for access to voice and data services. Each provider typically has its own network infrastructure, and users’ devices must be compatible with the specific network technology employed by the provider (e.g., GSM, CDMA). The leading mobile service providers in the UK include Vodafone, EE, and O2.