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Wireless Communication
This rapidly growing segment of the communication industry has the potential of providing high-speed high-quality information exchange between portable devices. Wireless communication enables several applications including multimedia Internet-enabled cell phones, automated highway systems, smart homes and appliances and videoconferencing, among others.
4,616 Questions
Use of mobile phone in college campus is good or not?
mobile phones should allowed on the college campus,but we should use it properly.But camera phones are not necessary in colleges so it must prohibit . But ordinary mobile phone is helps to increase our security any where.When we trapped in an accident mobile phones help us to overcome it through a call or an SMS from mobile phones. So mobile phone is an essential thing for college students.
Why do people buy cell phones?
Cell phones are so readily available due to high public demand for the product coupled with the ability to secure new customers with annual contracts. The big money is made through the service, the phone works as consumer bait. The basic supply and demand theory applies to this question along with profitable customer aquisition.
Why does my cell phone restart automatically?
menu>setting>sync and backup>create backup>and goto memory card and backup files and click it and retore
-That's what she said
-I was born awesome
-Terminating awesomeness
-Katy Perry fan01 (sorry I'm a really big Katy Perry fan)
HOPE THIS HELPS! -_________________- (its a whale haha)
Boost mobile has two types of service, CDMA and IDEN. So technically its CDMA and TDMA, they do not have GSM service.
New inventions in the electronics and communication field?
Technology has really shaped the way people communicate either for personal or business use. Take for example how fax transmission has improved. The usual way to transmit a document is using a traditional fax machine. Now you can do it either by using a service called internet fax or by email!
in the new era telecommunication plays a wide role ....the use of mobile phones has been increased ..it has been used by even the below poverty line people also...
How does a cell phone jammer work?
cellphone jammers or a yapper zapper overpower the cell phone by transmitting a signal on the same frequency and at a high enough power that the two signals collide and cancel each other out. Cell phones are designed to add power if they experience low-level interference, so the jammer must recognize and match the power increase from the phone.
Cell phones are full-duplex devices, which means they use two separate frequencies, one for talking and one for listening simultaneously. Some jammers block only one of the frequencies used by cell phones, which has the effect of blocking both. The phone is tricked into thinking there is no service because it can receive only one of the frequencies.
Less complex devices block only one group of frequencies, while sophisticated jammers can block several types of networks at once to head off dual-mode or tri-mode phones that automatically switch among different network types to find an open signal. Some of the high-end devices block all frequencies at once, and others can be tuned to specific frequencies.
To jam a cell phone, all you need is a device that broadcasts on the correct frequencies. Although different cellular systems process signals differently, all cell-phone networks use radio signals that can be interrupted. GSM, used in digital cellular and PCS-based systems, operates in the 900-MHz and 1800-MHz bands in Europe and Asia and in the 1900-MHz (sometimes referred to as 1.9-GHz) band in the United States. Jammers can broadcast on any frequency and are effective against AMPS, CDMA, TDMA, GSM, PCS, DCS, iDEN and Nextel systems. Old-fashioned analog cell phones and today's digital devices are equally susceptible to jamming.
The actual range of the jammer depends on its power and the local environment, which may include hills or walls of a building that block the jamming signal. Low-powered jammers block calls in a range of about 30 feet (9 m). Higher-powered units create a cell-free zone as large as a football field. Units used by law enforcement can shut down service up to 1 mile (1.6 km) from the device.
What is the science behind mobile phones?
Solid state micro-circuitry and microwave transmission and reception.
The fundamental principals are the venerable principals of radio, including microwave transmission and reception, modulation and demodulation. To these engineers added the principals of detection and estimation theory, or simply signal processing, which allowed efficient use and sharing of the scarce resource of the electromagnetic spectrum. Next the developments in micro-circuitry and digital processing including software made networks and mobile phone instruments practicable. The principals of communications, that is signaling through layered architectures, are essential to the success of modern cell phone systems.
Can you track a cell phone from your PC?
i found it as i had put the full lookout on my dads phone
and it linked to plan b
but it is meant to be a last resort
using this app: https://market.android.com/details?id=com.lookout.labs.planb.
for more information visit this website
http://track-android-phones.blogspot.com/
Interference - If intermittent and difficult-to-diagnose wireless communication errors occur, interference might be the culprit.
Is long distance texting free when you have free unlimited texting?
If you have unlimited texting in your plan than you should be able to text all you want without any extra texting charges unless you are texting someone that doesnt have the same carrier as you.
If you have Verizon then it is 10 bucks a month and you get unlimted Verizon to verzion.
How can you use solar energy to recharge mobile phones?
You can buy ready-made solar panels fitted with connectors for mobile phones. Simply plug it into the handset, and stick the solar where it will get most daylight. (usually a window). The panel generates DC power, which will charge the phone for free !
What is the amount of cell phone use people use day to day?
Basically, people use cell phones to connect with others anytime and anywhere through calling or texting. But with the many features that cell phones offer today, this device is also being used for entertainment with the games and music it offers and to enhance safety with its emergency response system as such. Cell phones are being operated through its buttons.
How Mobiles changed the future?
Mobile phones have become one of the biggest advancements in today’s modern society. Created in many shapes and sizes, mobile phones are as numbered and diverse as their users. Once bulky and cumbersome, mobile phones have evolved into sleek and stylish accessories. In fact, many cell phone companies have began competing in a veritable equivalent of an arms race inside of the wireless technology sector. Polyphonic ringtones, that is, ringtones that sound like actual music recordings rather than something derived from a 1985 Nintendo console, were just the beginning. With the advent of the iPhone, mobile phones suddenly became complete media players. Now a mobile phone doubles as a music player, a movie player, an internet browser, a video game system and a GPS.
Each of the five top mobile phone manufacturers, Nokia, Samsung, LG Electronics, Sony and Motorola have each unveiled their own top-of-the-line mobile phone. Each manufacturer touts their own flagship phone as the iPhone killer, though nothing has lived up to the name so far. If any phone has come close to nipping at the iPhone’s tail, it would be the BlackBerry, developed by the Canadian company Research In Motion. The BlackBerry has become so popular, even United States President Barrack Obama uses one. The BlackBerry works as a smartphone, an e-mail client, an instant message device and an Internet fax machine, just to name a few of its features.
The iPhone and BlackBerry inspire wonder and awe about what mobile phone devices hold for the future. It seems as though smartphones already do so much, it seems impossible to add any other features. Impossible it is not. Mobile devices are limited only by the imaginations of mobile phone manufacturers. Perhaps future mobile phones will include features that seem the realm of science fiction today What, for example, if mobile phones had the capability to perform video chat? What if cell phones one day replace the home computer as the most powerful consumer electronics device on the market? Imagine if your laptop was small enough to fit in your
pocket. On top of that, it could also take phone calls. As long as consumers continue to demand more features, it seems such a world is inevitable.
What is the best deal for prepaid cell phones?
There are a lot of different deals out there. Try looking online for for some reviews. Also check out your local mobile retailer and Walmart as they also have a good plan. The companies change prices and deals from time to time so the best thing to do is research everything available.
What happens if you already have a cell phone plan can you still buy a new cell phone?
Yes you can. I know Verizon lets you trade phones to a newer phone every 2 years. If you do it sooner they charge you the full price. If you wait they give a discount. The other cell phone companies may do the same thing.
What different types of communication are there?
Communication is a process that involves exchange of information, thoughts, ideas and emotions. Communication is a process that involves a sender who encodes and sends the message, which is then carried via the communication channel to the receiver where the receiver decodes the message, processes the information and sends an appropriate reply via the same communication channel.
Types of Communication
Communication can occur via various processes and methods and depending on the channel used and the style of communication there can be various types of communication.
Types of Communication Based on Communication Channels
Based on the channels used for communicating, the process of communication can be broadly classified as verbal communication and non-verbal communication. Verbal communication includes written and oral communication whereas the non-verbal communication includes body language, facial expressions and visuals diagrams or pictures used for communication.
Verbal Communication
Verbal communication is further divided into written and oral communication. The oral communication refers to the spoken words in the communication process. Oral communication can either be face-to-face communication or a conversation over the phone or on the voice chat over the Internet. Spoken conversations or dialogs are influenced by voice modulation, pitch, volume and even the speed and clarity of speaking. The other type of verbal communication is written communication. Written communication can be either via snail mail, or email. The effectiveness of written communication depends on the style of writing, vocabulary used, grammar, clarity and precision of language.
Nonverbal Communication
Non-verbal communication includes the overall body language of the person who is speaking, which will include the body posture, the hand gestures, and overall body movements. The facial expressions also play a major role while communication since the expressions on a person's face say a lot about his/her mood. On the other hand gestures like a handshake, a smile or a hug can independently convey emotions. Non verbal communication can also be in the form of pictorial representations, signboards, or even photographs, sketches and paintings.
Types of Communication Based on Style and Purpose
Based on the style of communication, there can be two broad categories of communication, which are formal and informal communication that have their own set of characteristic features.
Formal Communication
Formal communication includes all the instances where communication has to occur in a set formal format. Typically this can include all sorts of business communication or corporate communication. The style of communication in this form is very formal and official. Official conferences, meetings and written memos and corporate letters are used for communication. Formal communication can also occur between two strangers when they meet for the first time. Hence formal communication is straightforward, official and always precise and has a stringent and rigid tone to it.
Informal Communication
Informal communication includes instances of free unrestrained communication between people who share a casual rapport with each other. Informal communication requires two people to have a similar wavelength and hence occurs between friends and family. Informal communication does not have any rigid rules and guidelines. Informal conversations need not necessarily have boundaries of time, place or even subjects for that matter since we all know that friendly chats with our loved ones can simply go on and on.
Radio Broadcasting
Radio Broadcasting is the distribution of audio signals that transmit programs to an audience. There are wide varieties of broadcasting systems, all of which have different capabilities. It can vary from limited area coverage to national and can be used to transmit signals globally too, using retransmitted towers, satellite systems, and cable distribution. Satellite radio revolutionaries the entire scenario, it could cover even wider areas, such as entire continents, and Internet channels can distribute text or streamed music worldwide. In the late 1990s, digital transmissions began to be applied to broadcasting.
A broadcast may be distributed through several physical means. If coming directly from the studio at a single radio station, then it is simply sent to the transmitter from the antenna on the tower. Programming which comes through a satellite, played either live or recorded for transmission later. Different stations may simulcast the same programming at the same time. Usually analogue or digital tapes or CDs/DVDs are included in another broadcast. The final stage of broadcasting is to get the signal to the audiences. It is done via radio station to a receiver or through cable. Internet also brings radio to the recipient
Following are some of the points which should be taken into consideration for making the communication effective:
Speaking through eyes
The first thing that a good speaker does is first looks at the audience and takes a pause before beginning his speech. This helps to create good impression on the audience. While making the way through speech one must take care that he is not too lengthy. One must break his lengthy speeches to short and interesting ideas. A link should be maintained between consecutive statements. This helps to maintain the rhythm of flow of speech and keep the ears of audience towards him. Throughout the speech speaker should have maintain eye contact with the audience. Every reaction has equal and opposite reaction. So if the speaker doesn't maintain eye contact with the listeners they will feel that they are being ignored and it is quite likely that they also ignore whatever he is trying to convey.
Voice level
One more important thing while communicating is the level of voice that is he must be clear and audible to audience. A good voice can be strong point for being an effective speaker, although it's a natural gift but one can improve by skillful training and practice. Generally a good speaker knows with what tempo he should speak so that it's not too loud or too weak voice while speaking through amplifiers. Proper variation in pitch and tempo of the voice improves the quality of speech. Accurate pronunciation of words with due stresses wherever required must be done.
The speed with which the words are thrown must be such that audience can keep pace with them and are able to understand him. A thing that unknowingly happens with most of us is that we keep on repeating the words like "I mean"," you see"," etc. This may distract the audience.
Audience Awareness
To make our communication successful get the clue about the audience their interests. Following points should be noted:
1) Get the rough idea of the strength of the listeners.
2) Think over the age, sex, background and interest of the listeners.
3) See whether the audience is patient enough to handle you for hours. Check out if they are friendly or hostile.
4) Choose the approach that suits the audience.
5) Create a feeling such that each individual feels that the speaker is trying to talk with him and sharing the joy and sorrow of events with him.
6) Let the audience know depth of your knowledge regarding the subject.
7) Show your sincerity and whole heartedness for the subject.
8) To keep the communications healthy do keep cracking jokes in between such that the jokes should not be appeared to be deliberately told. They should relate to topic.
9) Concentrate on your ideas and do not get distracted by the activities performed by the audience e.g. smiling, whispering.
Facial expressions
Face is mirror of an individual's personality. Facial expressions reveal what thoughts are running through a persons mind. For e.g. a smile expresses friendliness and affection. Raised eye-brows show surprise and furrowed forehead conveys fear and anxiety. All the emotions and various types of human behavior bring different expressions on face. So while communicating see that the facial expressions reveal your interest for the subject on which you are communicating.
Postures
The body movements while speaking must coordinate with your convincing power. They must be such that they add to the things which are more effectively caught visually than verbally. For e.g. A head down shows the completion of a statement, raising of head indicates the end of the question. More frequent body movements reveal a state hurry or confusion in mind.
Dress Sense
The clothing plays an important role in presenting ourselves to society. The people who wear dress suitable to their body structure look attractive. A person's physical appearance and dress creates a definite impact on the communication process. A dress should be such that it is not too modern for the people whom we are interacting yet be able to create a positive impression on them.
These were the few things which many of us overlook but these small things contribute for effective communication. Regular follow up of these things will enhance the skill of communicating.
Can you clean your cell phone screen with Windex?
I have once done this and it worked well, but put the windex on a paper towel then clean the screen.
Can you bring cell phones on a plane?
Having an airplane is alright, as it won't hurt anything. The problem is having it sending and receiving radio signals; this is mostly harmful if you're making phone calls or sending messages. The reason is because airplanes use radar that is sometimes on the same frequency as cell phones, blackberries, and laptops that have internet connections. With all that background noise, it makes it difficult for the pilots to hear radio communications between planes and with the ground tower. It can also sometimes block radar readings, which can be very dangerous -- especially at night or in bad weather. So when the pilot tells you to turn off your phone, it's in your best interest to do so! =)
Two reasons.
1. There is a chance that the signal may interfere with radio signals the flightcrew is using to communicate with air traffic control.
2. Once the airplane is aloft, your phone probably wont work anyway. Cell-phone towers are optimized for users on the ground, it is rare to get any signal above about 2000 feet above ground level. Even if you did get a signal, the high speed of travel would mean your phone would be switching towers at very short intervals which results in dropped calls and can wreak havoc with the cellular networks.
What radiation do mobile phones use?
Mobile phones emit radiofrequency (RF) radiation, which is a type of non-ionizing electromagnetic radiation. Non-ionizing radiation has lower frequency and lower energy than ionizing radiation, such as X-rays, and is therefore less likely to damage DNA or cells.
The RF radiation emitted by mobile phones is in the microwave range and is absorbed by the tissues in the head and body when the phone is used. Some people have expressed concern about the potential health effects of RF radiation from mobile phones, but the weight of scientific evidence to date does not suggest that the use of mobile phones poses a significant risk to human health.
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Do you think Walmart sells virgin mobile phones?
Yes virgin mobile cell phones are available for purchase at walmart as are many of cell phones. They have a limited selection of virgin mobile phones with prices ranging from 30 to over 200 dollars. You can find them on walmarts website.
