Mobile Phone: Functions and Features
A mobile phone or mobile is known by different names such as handphone, cellphone, wireless phone, cell phone, cell, cellular phone, cellular telephone, cell telephone or mobile telephone. It is basically an electronic device with a long range applied for mobile data or voice communication across a network of specified base stations termed as cell sites. Other than the normal voice function of a telephone or a mobile phone, contemporary mobile phones are able to support a number of mobile phone accessories and extra GSM facilities like the following:
- SMS (short message service) for text messaging
- Gaming
- Packet switching for Internet accessibility
- Infrared
- Bluetooth
- Camera with video recorder (camcorder)
- MP3 player
- MMS (multimedia messaging service) for transmitting and obtaining video and photos
- GPS (global positioning system)
- Radio
Most recent mobile phones link to a cellular network comprising cell sites (base stations) and switching points held by a mobile network operator (excluding satellite phones that are mobile but not cellular).
A mobile phone, rather than a radio telephone, provides automated paging from and calling to a PSTN (Public Switched Telephone Network), full-duplex communication, handover or handoff at the time of a phone call while the user shifts from one base station coverage region or cell to another. A cellular phone provides broad area service and must not be mixed up with a cordless telephone that is a wireless phone, as well. A wireless telephone just provides telephony services within a restricted area, for instance, within an office or home by a base station and fixed line held by the subscriber.
There are various types of mobile phones, starting from basic phones to feature phones like cameraphones, musicphones and smartphones.
Features of a Mobile Phone:
Following are the important features of a mobile phone:
- Voice calls
- Text messages
- Call registers
- MP3 playback (music)
- MP4 playback (video)
- Alarms
- RDS (Radio Data System) Radio Receiver
- Document and memo recording
- Personal digital assistant (PDA) operations
- Personal organizer operations
- Streaming video
- Downloading video
- In-built cameras (3.2+mpx) and camcorders with flash and autofocus for video recording
- Games
- PTT (push to talk)
- Universal Serial Bus or USB (2.0)
- Memory card reader (SD)
- WiFi Connectivity
- Bluetooth (2.0)
- Video calling
- Ringtones
- Instant messaging
- Internet browsing and e-mail
- Functions as a wireless modem for personal computers
Since mobile phones give off electromagnetic radiation, they pose health risk to some extent. ”’ Mobile Phone Manufacturers:”’
Following are the names of the prominent mobile phone manufacturers of the world:
- Nokia
- Samsung
- Motorola
- Sony Ericsson
- LG Electronics
- Audiovox (presently UTStarcom)
- BenQ-Siemens
- Apple Inc.
- Benefon
- High Tech Computer Corporation (HTC)
- CECT
- Kyocera
- Fujitsu
- NEC
- Mitsubishi Electric
- Panasonic
- Neonode
- Matsushita
- Palm
- Philips
- Pantech Wireless Inc.
- Research in Motion Ltd. or RIM
- Sanyo
- Sagem
- Qualcomm Inc.
- Siemens
- Sharp
- Sierra Wireless
- Sendo
- T&A Alcatel
- SK Teletech
- Trium
- Huawei
- Toshiba
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