When we want to purchase any of them what do we look for?
Let us see what are the choices available?
89 x 49
Radio Ring tones Memory
4 x Zoom
1 M Pixel
Besides the above tabulated facts about the mobile handset, being a student of technology you
may also like to know the following
Network type GSM2 or CDMA3 (Bandwidth),
Battery: Type and ampere hour Talk-time per one charge, Standby time
Short for thin film transistor, a type of LCD flat-panel display screen, in which each pixel is controlled by from
one to four transistors. The TFT technology provides better resolution of all the flat-panel techniques, but it is also
the most expensive. TFT screens are sometimes called active-matrix LCDs.
short form of Global System for Mobile Communications, one of the leading digital cellular systems. GSM uses
narrowband Time Division Multiple Access (TDMA), which allows eight simultaneous calls on the same radio
frequency. GSM was first introduced in 1991. As of the end of 1997, GSM service was available in more than 100
countries and has become the de facto standard in Europe and Asia.
Short form of Code-Division Multiple Access, a digital cellular technology that uses spread-spectrum techniques.
Unlike competing systems, such as GSM, that use TDMA, CDMA does not assign a specific frequency to each user.
Instead, every channel uses the full available spectrum. Individual conversations are encoded with a pseudo-random
digital sequence. CDMA is a military technology first used during World War II by the English allies to foil German
attempts at jamming transmissions. The allies decided to transmit over several frequencies, instead of one, making it
difficult for the Germans to pick up the complete signal.