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 focusing on the current trend of how mobile phones are used by young people. There is a popular trend in Japan to use the mobile phone handset to read information from special barcodes. The current technology is based on 'QR codes' which are a form of 2D barcode that is written out in a square shape instead of a bar shape. The phone handset can scan the QR code using its camera or other input, decode the information, and then take actions based on the type of content. The most popular usage of these QR codes is in advertising. All