how does mobile phone works?
609676
throught sim card, network
18454
This will be a simplistic answer since I don't work in the phone industry but this is what I know:\n\nFirst, we must assume that we are leaving the newer kinds of phone service out of the equation - I might touch on them later. Anyway, yes, in the traditional phone service setup, all phones are connected by lines & different areas are connected by cables that hold what we could term as super lines...basically a larger collection of lines to allow for more data flow back & forth. The phone service reaches your house through a line actually connected to your house above or below ground. In order to get there, it winds through your neighborhood & connects to a type of juncture box which houses all of the equipment for the area (these are normally short-ish green boxes on the side of the road or look like transformers at the top of telephone poles).\n\nAs for connecting countries themselves, there is/was (not sure if it is still in use but I think it is) something called the TransAtlantic Cable which originally carried the ability for telephone service overseas. Of course, when you make the jump to another continent, you then continue with the lines & cables either above or below ground.\n\nBack in the day, "Ma Bell" (nickname, can't think of the real name right now) & AT&T owned all the lines. At some point, this company was split up into what became known as the "baby Bells" which included, Southern Bell, Pacific Bell, etc. The other early player in the game & in our ability to communicate across the country & overseas, AT&T, is a company you are likely still familiar with today.\n\nI would suggest researching both "AT&T", "Ma Bell" & something like "history of telephone communications" online to get more information as the history of the worldwide telephone service is quite interesting. You'll be amazed at what folks accomplished when all of this was first set up; I certainly am when I look at where we were even when I was a child as opposed to where we are today.\n\nAs for my comment on the newer technologies, those would include broadband (or internet) telephone service - which carries the information over either the DSL or cable connected to your computer - & satellite telephone service. I can't say much to satellite as I've not researched it...
315311
Depends on what mobile phone you have. Most of the new models provoide a software in which you can do it.
769812
Decibels are a measure of sound waves.  The signal between a cell phone and a cell tower is a radio signal (aka electromagnetic wave).  Two cell phones don't communicate directly.   Given these facts, I don't see how your question can have any meaning.  That makes answering impossible.
15472
Somewhat. Since cellphone services support short message services which is also like paging, it relieves users to carry both cellphones and beepers. However, some professionals like medical staff sill use pagers because messages qickly pass through to the users.
833784
It can't really. The key here is 'information' and information is different from data. The thing is that the data you are sending doesn't contain as much information as you think it does. In other words it can be compressed. So the data you can cram down a phone line is first compressed and then sent in a way that makes the absolute best possible use of the available bandwidth. \n\nit's not worth going into the details of the modulation techniques, in the end they all require a small change in the signal to pass a bit of compressed data and that requires bandwidth. There's no magic in this, just clever physics and software.\n\n(n2thepowerofn below) Lol!
524640
HI,\nThis is very simple if your mobile supports GPRS and WAP 2.0, Because, via GPRS you can connect to internet and search anything you need up for your mobile phone.\nThis way you can save the time of connecting to computer and whereever you search you would find MMS type contents or 'send a message to get a tone' like thingy.\nhttp://tagtag.com/rexpayne\nor simply http://tagtag.com for all the softwares and ringtones +games.\n\nhttp://360.yahoo.com/jcbroogley
862058
Nobody seems to have the right answer regarding how to send an email from your PC to your mobile phone.  Well, this is definitely do-able and this site is a good resource for each cell phone provider:\n\nhttp://www.sms411.net/2006/07/how-to-send-email-to-phone.html\n\nHappy emailing-to-your-mobile-phone! :-)
915150
I would assume a phone with a "redirect" on it. Where a caller calls your landline, if no one answers it gets redirected to your phone. This usually requires you to buy a new landline phone.\n\nIt won't be instant but will do what you want.
1019577
First off, your phone should be WAP or GPRS enabled (both equipped from the factory, and hooked up to WAP/GPRS mobile internet through your Network provider).\n\nThen after reading this,  head over to http://mobile.yahoo.com where it'll fill you in on the rest.
631344
you phone will ring..
101320
The electromagnetic waves used by cell phones are called radio waves. Waves are characterized by their frequency; that is, the number of times that the wave pattern repeats in a second (or some other time interval). For example, the radio waves that a type of cell phone called a GSM phone use are in frequency bands centered on 850 MHz, 900 MHz, 1800 MHZ and 1900 MHz. That is, the radio waves that a GSM cell phone using the 850 MHz band oscillate roughly 850 million times every second (the pattern repeats 850 million times every second). \n\nThe radio waves that travel back and forth from the cell phone tower to your cell phone are electromagnetic. Your voice signal on the cell phone is carried by modulating electromagnetic waves. No electromagnetic waves, no signal, and therefore, no cell phone.  Without electromagnetic waves, there would be no radio, no tv and no cell phones, and no cordless phones, and no wireless PCs etc etc.\n\nAll light is electromagnetic waves. All heat is electromagnetic waves. Electricity is actually an electromagnetic wave travelling in a wire (the electrons move much slower than this wave). So without electromagnetic waves, the universe would be a very different place.
1135512
Talk on the cell phone
854425
they are phone calls made by using the internet.\nTraditional phone lines carry data via an electronic signal which is first activated by sending tones across the line to identify the line you are connecting to (pressing the buttons) then that information is sent to a central area where it is then "boosted" and routed to wherever the tones tell it to go.\nSame thing with internet calls except instead of pressing buttons on your phone and going through traditional lines of communication you use the internet connection to "translate" a number into those previously  mentioned tones to transmit the information to wherever you want it to go.  Most of the time you need to have some sort of software to do this or at least a service of some sort to connect to so that in the instance where you may be "calling" from your computer, the other person is answering on a phone.\nThere are programs and services out there that work completely free but both parties have to have the same program to make it work.
238718
An amazing circuit board containing the brains of the phone \nAn antenna \nA liquid crystal display  \nA keyboard \nA microphone \nA speaker \nA battery \n\nSignificance when we study it?\n\n\nThe analog-to-digital and digital-to-analog conversion chips translate the outgoing audio signal from analog to digital and the incoming signal from digital back to analog. You can learn more about A-to-D and D-to-A conversion and its importance to digital audio in How Compact Discs Work. The digital signal processor (DSP) is a highly customized processor designed to perform signal-manipulation calculations at high speed. \n\nThe microprocessor handles all of the housekeeping chores for the keyboard and display, deals with command and control signaling with the base station and also coordinates the rest of the functions on the board.   \n\n\nThe ROM and Flash memory chips provide storage for the phone's operating system and customizable features, such as the phone directory. The radio frequency (RF) and power section handles power management and recharging, and also deals with the hundreds of FM channels. Finally, the RF amplifiers handle signals traveling to and from the antenna. \n\nThe display has grown considerably in size as the number of features in cell phones have increased. Most current phones offer built-in phone directories, calculators and games. And many of the phones incorporate some type of PDA or Web browser.     \n\nSome phones store certain information, such as the SID and MIN codes, in internal Flash memory, while others use external cards that are similar to SmartMedia cards. \n  \nCell phones have such tiny speakers and microphones that it is incredible how well most of them reproduce sound. The speaker is about the size of a dime and the microphone is no larger than the watch battery beside it. Speaking of the watch battery, this is used by the cell phone's internal clock chip
433448
The J2ME package has mobile phone simulator. you can use it to develop programs for the mobile phone. It wont receive transmissions, but you can simulate how things work.
981824
of course, there are viruses for mobile phones and some of them are really nasty ones. and luckily there are antivirses and firewalls too for mobile phones too like from norton, mccafee etc. i myself got the norton antivirus for mobile installed on my nokia mobile after i had to format my cellphone after a virus attack.\njustcheck it with the nokia service centre or any store dealing with softwares in your vicinity, though it will cost you a bit. and yup there are some datasafe softwares too for mobile which will help you save ur data in ur mobile phone like ur contact details, sms messages, etc.