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 overuse less likely to develop addictive mobile phone behavior because of different social usage, stress, and greater self-regulation. Overuse of mobile phones can affect social and psychological well-being and health. There is an enormous impact of the mobile phone on contemporary society from a social scientific perspective. In his 2002 book "Perpetual contact: mobile communication, private talk, public performance", the author, James Katz, writes: "They [mobile phones] have transformed social practices and changed the way we do business, yet surprisingly we have little perception on their effect in our [lives]." Some people are replacing face-to-face conversations with cybernetic ones. Clinical psychologist