Search results
Results from the WOW.Com Content Network
An iPhone and iPad - two examples of mobile devices. A mobile device or handheld device is a computer small enough to hold and operate in hand. Mobile devices are typically battery-powered and possess a flat-panel display and one or more built-in input devices, such as a touchscreen or keypad.
Mobile phones have a display device, some of which are also touch screens. The screen size varies greatly by model and is usually specified either as width and height in pixels or the diagonal measured in inches. Some phones have more than one display, for example the Kyocera Echo, an Android smartphone with a dual 3.5 inch screen.
A smartphone is a tool of mobile computing. Mobile computing is human–computer interaction in which a computer is expected to be transported during normal usage and allow for transmission of data, which can include voice and video transmissions. Mobile computing involves mobile communication, mobile hardware, and mobile software ...
NMT was the first mobile phone network to feature international roaming. In 1983, the first 1G cellular network launched in the United States, which was Chicago-based Ameritech using the Motorola DynaTAC mobile phone. In the early to mid 1990s, 1G was superseded by newer 2G (second generation) cellular technologies such as GSM and cdmaOne.
CDMA2000 is a family of 3G mobile technology standards for sending voice, data, and signaling data between mobile phones and cell sites. It is a backwards-compatible successor to second-generation cdmaOne (IS-95) set of standards and used especially in North America and South Korea, China, Japan, Australia and New Zealand.
Mobile Internet [12] emerged from the development of PC Internet in the form of handheld, portable devices. The combination of mobile communication and the Internet has allowed users to have easier access in going online if they have mobile technologies such as smartphones, tablets, and laptops amongst the most popular.
Mobile Internet: CDMA/TDD: 16: Reported speeds according to IPWireless using 16QAM modulation similar to HSDPA+HSUPA: EV-DO Rel. 0 EV-DO Rev.A EV-DO Rev.B 3GPP2: Mobile Internet: CDMA/FDD: 2.45 3.1 4.9xN: 0.15 1.8 1.8xN: Rev B note: N is the number of 1.25 MHz carriers used. EV-DO is not designed for voice, and requires a fallback to 1xRTT when ...
Mobile devices are a pervasive part of people's everyday lives. People use mobile phones, PDAs, and portable media players almost everywhere. These devices are the first truly pervasive interaction devices that are currently used for a huge variety of services and applications. [1] Mobile devices affect the way people interact, share, and ...