Access Point Name (APN) is a unique name that identifies a specific mobile network operator and the type of data network that a mobile device should use when connecting to the internet. It is used in mobile communications to establish a data connection between a mobile device and the network. The APN typically consists of a combination of letters, numbers, and symbols that are specific to the mobile operator and network technology. By entering the correct APN, a mobile device can connect to the internet and access services such as email, web browsing, and online applications.