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An electronic telecommunications device, often referred to as a cellular phone or cellphone. Mobile phones connect to a wireless communications network through radio wave or satellite transmissions. Most mobile phones provide voice communications, Short Message Service (SMS), Multimedia Message Service (MMS), and newer phones may also provide Internet services such as Web browsing and e-mail.
The first handheld mobile phone was demonstrated by John F. Mitchell and Martin Cooper of Motorola in 1973, using a handset weighing c. 2 kilograms (4.4 lbs). From 1983 to 2014, worldwide mobile phone subscriptions grew to over seven billion. 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") as of 2016, the largest were Samsung, Nokia, and Alcatel.
In Bangladesh, mobile phone are introduced to people in October 1990 by Citycell Bangladesh company. Citycell company try to do their best but they can’t long enough. After 7 years the mobile revolution in Bangladesh began in 1997 with the introduction of the Grameen Phone program. Then day by day technological change has came. People are going to introduced with the smartphone in early 2009. Some features and technology like Touch screen, polyphonic ringtones, Pixel camera, Audio Video recording with a mobile phone amazed the people. Nowadays different kinds of smartphone like Apple, Huawei, Nokia, Samsung, Xiaomi, Oppo, Symphony etc. give a sensational feature to Bangladeshi people.
