MNO (Mobile Network Operator)

A mobile network operator or MNO, also known as a wireless service provider, wireless carrier, cellular company, or mobile network carrier, is a provider of wireless communications services that owns or controls all the elements necessary to deliver services to end-users, including radio spectrum allocation, wireless network infrastructure and other necessary components.

In short, a mobile network operator (MNO) is a telecoms entity that provides services for mobile phone subscribers.