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".
Japanese mobile phone culture operating a vehicle or riding a bicycle are prohibited, but nevertheless remain fairly common. Japanese mobile phone culture In Japan, mobile phones have become ubiquitous. In Japanese, mobile phones are called , literally "portable telephones," and are often known simply as "keitai". Much of the Japanese population own cellular phones, most of which are equipped with enhancements such as video and camera capabilities. As of May 2008, 31.3% of elementary school students, and 57.6% of middle school students own a cell phone, with many of them accessing the Internet through them. This pervasiveness and the particularities of their usage has