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".
Postpaid mobile phone a country dominated by postpaid providers including Verizon, AT&T, Sprint, and T-Mobile, although a smaller market has been captured by prepaid providers such as Boost Mobile, Virgin Mobile, MetroPCS, Cricket Wireless, TracFone, and Ting Inc. many of which use postpaid providers networks (e.g. MetroPCS is carried on the T-Mobile network). The alternative billing method is a prepaid mobile phone where a user pays in advance for credit which is then consumed by use of the mobile phone service. Postpaid mobile phone The postpaid mobile phone is a mobile phone for which service is provided by a prior arrangement with a