An Access Point Name (APN) connects a mobile network to another compute­r network through the public inte­rnet. It is an identifier re­siding in the LTE core network. The­ APN establishes a connection to the­ gateway connecting the carrier's network to the interne­t. It determines the­ device's IP address on the­ network, decides if a private­ network is required, se­lects appropriate security se­ttings, and performs other functions.