Most smartphones produced from 2012 onward have high-speed mobile broadband 4G LTE capability.
In March 1996, Hewlett-Packard released the Omni Go 700LX, a modified HP 200LX palmtop PC with a Nokia 2110 mobile phone piggybacked onto it and ROM-based software to support it.
The first integration of data signals with telephony was conceptualized by Nikola Tesla in 1909 and pioneered by Theodore Paraskevakos beginning in 1968 with his work on transmission of electronic data through telephone lines.
In 1971, while he was working with Boeing in Huntsville, Alabama, Paraskevakos demonstrated a transmitter and receiver that provided additional ways to communicate with remote equipment.
It had a 640×200 resolution CGA compatible four-shade gray-scale LCD screen and could be used to place and receive calls, and to create and receive text messages, emails and faxes.
It was also 100% DOS 5.0 compatible, allowing it to run thousands of existing software titles, including early versions of Windows.