Mobile phone commercially available handheld mobile phone. From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion—enough to provide one for every person on Earth. In first quarter of 2016, the top smartphone developers worldwide were Samsung, Apple, and Huawei, with smartphone sales represented 78 percent of total mobile phone sales. For feature phones (or "dumbphones") , the largest were Samsung, Nokia, and Alcatel. A handheld mobile radio telephone service was envisioned in the early stages of radio engineering. In 1917, Finnish inventor Eric Tigerstedt filed a patent for a "pocket-size folding telephone with a very thin carbon microphone".
Mobile phone content advertising 1997 began advertising with Team Sabco (later Chip Ganassi Racing) before merging its mobile phone business with Southwestern Bell to form Cingular Wireless in 2001; Cingular then joined Richard Childress Racing in 2002. Both firms are grandfathered under NASCAR's deal with Nextel. In Formula One, McLaren has signed a deal with Vodafone to sponsor their F1 team effective 2007. Ferrari is reportedly signed with Telecom Italia's Alice brand of services in 2007 where the Alice brand will appear as the "primary" sponsor of the red cars where Marlboro is prohibited. Mobile phone content advertising Mobile phone content advertising is the