This indicator is defined as the number of mobile cellular subscriptions per 100 population. Mobile cellular subscriptions are subscriptions to a public mobile telephone service using cellular technology, which provides access to the Public Switched Telephone Network (PSTN). Subscriptions include post-paid and pre-paid, and both analogue and digital cellular systems. They also include subscriptions to International Mobile Telecommunications-2000 (IMT-2000 or Third Generation, 3G) networks. Subscriptions to public mobile data services or radio paging services are not included.