Mobile telephone, portable device for connecting to a telecommunications network in order to transmit and receive voice, video, or other data. Mobile phones typically connect to the public switched telephone network (PSTN) through one of two categories: cellular telephone systems or global satellite-based telephony.
Cellular telephones, or simply cell phones, are portable devices that may be used in motor vehicles or by pedestrians. Communicating by radio waves, they permit a significant degree of mobility within a defined serving region that may range in area from a few city blocks to hundreds of square kilometer's. The first mobile and portable subscriber units for cellular systems were large and heavy. With significant advances in component technology, though, the weight and size of portable transceivers have been significantly reduced. In this section, the concept of cell phones and the development of cellular systems are discussed.
Types of phones
Smart Phones
Smart phones are high specification phones that operate like miniature computers. They can usually do tasks like connect to the internet and receive emails.
Recent examples of smart phones are the Apple iPhone, Blackberry's and Google Android phones.
Camera Phones
Camera phones come with a built in camera.
Some new camera phones are reaching the 12 megapixel mark, though a standard model will frequently between 2 and 8 megapixels.
Music Phones
Music phones will ideally have a good mp3/aac audio player and enough memory to hold a reasonable amount of songs. Always make sure that your phone has plenty of onboard/included memory, or is upgradable to have more memory via an SD/memory card slot. Ideally you will want at least 1-2gb, though it is possible to get up to 16gb.
Mobile phone manufacturers / brands
HTC
Apple iPhone
Samsung
LG
Nokia
Sony
BlackBerry
Motorola
Google
Alcatel
O2
2. PHONE
Mobile telephone, portable device for connecting to a telecommunications network in order
to transmit and receive voice, video, or other data. Mobile phones typically connect to the public
switched telephone network (PSTN) through one of two categories: cellular telephone systems or
global satellite-based telephony.
Cellular telephones, or simply cell phones, are portable devices that may be used in motor vehicles
or by pedestrians. Communicating by radio waves, they permit a significant degree of mobility within
a defined serving region that may range in area from a few city blocks to hundreds of square
kilometer's. The first mobile and portable subscriber units for cellular systems were large and heavy.
With significant advances in component technology, though, the weight and size of portable
transceivers have been significantly reduced. In this section, the concept of cell phones and the
development of cellular systems are discussed.
3. TYPES OF PHONES
Smart Phones
Smart phones are high specification phones that operate like miniature
computers. They can usually do tasks like connect to the internet and receive
emails.
Recent examples of smart phones are the Apple iPhone, Blackberry's and
Google Android phones.
Camera Phones
Camera phones come with a built in camera.
Some new camera phones are reaching the 12 megapixel mark, though a
standard model will frequently between 2 and 8 megapixels.
Music Phones
Music phones will ideally have a good mp3/aac audio player and enough memory
to hold a reasonable amount of songs. Always make sure that your phone has
plenty of onboard/included memory, or is upgradable to have more memory via
an SD/memory card slot. Ideally you will want at least 1-2gb, though it is possible
to get up to 16gb.
4. MOBILE PHONE MANUFACTURERS / BRANDS
HTC
Apple iPhone
Samsung
LG
Nokia
Sony
BlackBerry
Motorola
Google
Alcatel
O2
