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Cell phones use radio waves travelling at the speed of light with a typical frequency of 800 MHz, which is ten times greater than FM radio frequency. Due to shorter wavelengths, the cell phones use very short antennas.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoOtherwise they do not into your pocket
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The Effects Of Different Cell Phone Antenna?
Cell phone antennas have changed in many ways over the years since cell phones were first introduced. When first introduced, cell phones needed to have external antennas to be able to pick up signals from service towers. However, over time external antennas seemed somewhat out of fashion, so as cell phone designs evolved the external antenna became an internal antenna. Although many internal antennas work very well, there have been some problems concerning signal reception. Generally speaking, although external antennas are out of style and can make your phone feel somewhat bulky, external antennas are still one of the most practical ways to have your cell phone receive a good, strong signal.
Why car antennas are as long as TV antennas?
The length of an antenna is based on what frequency it is designed to send or receive. The higher the freq. the shorter the antenna. For instance, cell phone antennas are very short while AM radio antennas are long. CB antennas are 18 feet long but there are many exceptions where people have tried to design shorter versions that will still work well.
I'm looking for good cell phones?
There are many great cell phones on the market. I-phones are very popular, but also can be very expensive. Android phones are also great phones and are available through multiple cell phone companies.
What is the history behind cellular phones?
Cellular phone were created in America, and they were originally very large compared to today's phones. They had antennas on to receive a signal. They were made in 1977.
Today in the US cell phones are a very popular item. Is cell phones a noun in this sentence?
Yes
What are the nouns in this sentence Today in the United states cell phones are very popular item?
In the sentence "In the United states cell phones are a very popular item" the only verb is "are".
How do Samsung phones rate compared to other phones?
If you are not very satisfied with the cell phone you currently have and are wondering how good are the rates of Samsung cell phones compared to other brands, they are very good.
Why do the cell-phones use higher frequency bands Ghz and not lower ones Khz-Mhz?
The lower bands are already in use, and have been for many years. Additionally, the higher frequencies allow the use of very small antennas and some other components that reduce the size of the phones. Microcircuits for microwaves.
Are feature rich and basic cell phone models comparable to or different from smart cell phones?
Cell phones and smart phones are very different. Cell phones are limited to talking and texting. Smart phones on the other hand are like mini computers and are capable of many functions.
Cost of collect calls to cell phones?
It depends on the carrier. However - collect calls to mobile (cell) phones are very expensive !
Do cell phones change every two years?
New cell phones get released very often, at least every 6 months there are new models released by all cell phones manufacturers.
How important are cell phones?
cell phones are awesome and they are very important more important than you think like big time important
