TCP/IP is the standard Internet transmission control protocol that allows reliable data transfer in networks. TCP/IP is the key enabler for advanced mobile applications such as multimedia messaging with big file sizes, e-mail, video and presence-enhanced chat and contacts.

Technically, TCP/IP is a suite of communications protocols used to connect different kinds of hosts – such as computers or mobile phones – on the Internet. TCP/IP uses several protocols, the two main ones being TCP (“transmission control protocol”) and IP (“Internet protocol”).