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| Dead Spot | Digital | |
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| Downloadable Ringing Tones | ||
Dead Spot
An area within the coverage area of a wireless network in which there is no coverage or transmission falls off. Dead spots are often caused by electronic interference or physical barriers such as hills, tunnels, and indoor parking garages. See also Coverage.
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An area within the coverage area of a wireless network in which there is no coverage or transmission falls off. Dead spots are often caused by electronic interference or physical barriers such as hills, tunnels, and indoor parking garages. See also Coverage.
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Digital
A data format that uses two physical levels to transmit information corresponding to 0s and 1s. A discrete or discontinuous signal. See also Analogue.
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A data format that uses two physical levels to transmit information corresponding to 0s and 1s. A discrete or discontinuous signal. See also Analogue.
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Display
There are various display types: Back-lit display - This refers to the light in the display of phones, which lights up in varying conditions. LCD (Liquid Crystal Display) - Easy viewing in all lighting conditions. Uses dark segments against a lighter background. The characters in this type of display are black, on a grey background. They are lit up by a light shining onto the display from above. Colour LCD - Reverses the display image, making it possible to create coloured, luminous segments. Provides clearer, crisper, bolder-looking characters that are easy to read. LED (Light Emitting Display) - Light emitting displays are big and bright. They provide excellent visibility in direct sunlight and in darkness. VFD (Vacuum Fluorescent Display) - This display retains visibility in direct sunlight and is highly visible in darkness. It can be seen without distortion over a wide range of viewing angles and remains fully operational over a broad temperature range.
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There are various display types: Back-lit display - This refers to the light in the display of phones, which lights up in varying conditions. LCD (Liquid Crystal Display) - Easy viewing in all lighting conditions. Uses dark segments against a lighter background. The characters in this type of display are black, on a grey background. They are lit up by a light shining onto the display from above. Colour LCD - Reverses the display image, making it possible to create coloured, luminous segments. Provides clearer, crisper, bolder-looking characters that are easy to read. LED (Light Emitting Display) - Light emitting displays are big and bright. They provide excellent visibility in direct sunlight and in darkness. VFD (Vacuum Fluorescent Display) - This display retains visibility in direct sunlight and is highly visible in darkness. It can be seen without distortion over a wide range of viewing angles and remains fully operational over a broad temperature range.
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Dual band
A wireless phone that is capable of operating on two frequency bands such as the 900 MHz digital band and the 1800 MHz digital GSM band. The dual band phones can be used in Europe, Africa, and Asia. See also Tri band.
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A wireless phone that is capable of operating on two frequency bands such as the 900 MHz digital band and the 1800 MHz digital GSM band. The dual band phones can be used in Europe, Africa, and Asia. See also Tri band.
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Downloadable Ringing Tones
You may also download more ringing tones over the air to add to your phone's preset selection of tones.
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You may also download more ringing tones over the air to add to your phone's preset selection of tones.
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