Do Cellular Phones Pose Health Risks?

You hear it in the media on a slow news day. Do cellular phones pose health risks? The available scientific reports do not show that any health problems are associated with the use of wireless phones. On the other hand, however, there is no proof that cellular phones are absolutely safe. Wireless phones emit small levels of radiofrequency energy (RF) in the microwave range when being used. As well, cell phones also emit small levels of RF when in the main menu screen.

While high levels of RF can produce health effects by heating tissue, low level exposure to RF that does not produce heating effects, cause no known adverse health effects while using cell phones.

Many studies of small level RF exposures have not found any biological effects. Some studies suggest that some biological effects may occur, but these findings have not been confirmed by additional research. In other research, expert researchers have had problems in reproducing those studies, or determining the cause for the conflicting results with respect to wireless phones.

We hope that we have been successful in reassuring our customers that there is no evidence to conclude that wireless phones pose health risks.

Catherine Kenyeres is a free lance writer and publisher for Best-4u-Cell-Phones.com. Catherine provides the latest information, reviews and comparisons for her cell phone clients.

The Changing Face of Wireless, The Road Ahead

This was the book written by none other than Bill Gates, who has undisputedly been the king of the IT. This is irrespective of anyone accepts it or not. Sounds as if a lot is going to happen in the Wireless domain in the near future.

There was a companyรขโ�ฌโ�ขs vision that stated "Inventing is better than predicting". Its easier said than done.

Its just a generic view with respect to the subject intended for the Wireless/Wireline Networks and the future associated ahead. As they say, that "necessity is the mother of invention", and would dictate the terms/future. But hey, out here the technology has been moving so fast that there is absolutely no scope of collecting the necessities (Requirements, as we call it). And so many bigger giants are changing/cutting-short their turnaround cycle time to meet the customer demands. The biggest issues that are stopping growth as of today are due to the lack of standardization and inter- operatibility.

Specifics with respect to Carrier dependencies especially in the CDMA networks where the Software Applications are very closely associated to the revenue models of the carriers. And the technical support guys in the associated carriers do not understanding a bit of it. And in the worst case scenario, if the frequency itself is not supported in the deployment area.

The revenue models so far have mostly been dictated by the carrier/service providers. In fact, so many mobile manufacturing companies are facing this challenge, and putting in a lot of R & D to reduce this monopoly of the network service providers.

What is the Road ahead, where are we headed towards. As a user, as a developer, as a carrier service provider, or as an Application provider/Content Aggregator/Content provider. The device manufacturing firms are already feeling the heat due to carrier dependencies, but still they have a big pie as the hardware as well as OS is owned by a stake of most of the biggest device manufacturing giants. But what happens when embedded OS'es like e-linux mature hitting the cost implication substantially. As most of the major players own a stake there (Symbian), and a free alternative to OS which is much matured than Symbian is bound to make a news.

On the hardware side, ARM enjoys the dominance. And the other players are far behind, the way in which R&D in hardware industry are on, looks as if there is bound to be some competition to get generated here also.

Would this result in the device manufacturing companies giving application support directly and also tailoring the functionalities so that the dominance of carriers is reduced. To the engineer's, its definitely going to be an enjoyable experience.

Abhinav Vaid
Foundation Member of Indian Testing Board

What is the Difference Between Satellite Phone and Cellular Phone?

Satellite phone and Cellular phones are wireless devices. They almost look alike. But the way they work is totally different. Cellular phones working method is cell based. That is why they are called cellular phones. The whole network area is divided into small areas. And in each area an antenna is installed. These are also called towers. When a cellular phone is moving, it keeps entering from one cell to another. When it crosses the border of one cell, the phone sends a signal to the MTSO (Mobile Telephone Switching Office). With the help of control channel the database of the MTSO relocates the phone in a new cell or area. The MTSO and Public Switched Telephone Network (PSTN) coordinate to handle cellular calls.

But in the contrary Satellite phones use Low Earth Orbiting (LEO) satellites. With the turning on of the satellite phone a signal goes up to the any number of satellites of a group with whom the phone is registered. When a person makes a call from the handset, a signal goes to the near by orbiting satellite. The satellite connects to the gateway or ground station. Then the gateway takes the call to the destination. The call can be directed to the landline, cellular phone or PSTN. Any of the landlines, cell phone or PSTN can also call a satellite phone. In the case of satellite phones the gateway takes care of calls not cells as in the case of cellular phones. If a satellite phone calls another satellite phone, the call reaches a ground station through a satellite. Then it goes up to the air to a satellite and then the call reaches the destination phone. So the gateway processes the switching of calls not the satellite.

Paul has been providing answers to lots of queries through his website on a wide variety of subjects ranging from satellite phones to acne. To learn more visit http://www.askaquery.com/Answers/qn453.html and http://www.askaquery.com

What is a Trac Phone?

Having a cell phone today is a must have. So many people are on the go, need to communicate with others while they are off, and running. Cell phones can be expensive if you are not careful about how you use them. There is a way to stay on a budget and still talk on the go. You can do this with a trac phone. They are the newest invention in pre paid phones.

With a trac phone, you will buy the actual phone for a good low price and then you simply buy airtime talk minutes and add them to your phone. It is simple and fun. You can purchase your trac phone at most electronic stores and the cards are sold there and at almost any department store as well. You will find that getting a trac phone will help you a lot and keep you on a strict calling budget.

When you buy the phone, you must first activate it. You will have to call a toll free number or go online to do this. You will enter the EMI numbers and a code and you are all set. Once you have your phone activated, you can then enter a prepaid card for airtime. You can also do this online or on the phone.

To keep adding airtime, you simply enter the card numbers into the prepaid selection on the phone. You can find the cards to be in any denomination that you want. You can get ten minutes, fifty minutes and even one hundred air time minutes for your trac phone. Of course, the more minutes you want, the more you will pay for your card.

Paying for the trac phone cards and the trac phone is still less than you would pay for a monthly service fee for a regular cell phone. You will pay less and still have all the use that you want. You can still receive phone calls and even make text messages. The only difference is that you are in control so that you do not go over your desired amount of minutes. Your phone will keep you notified of the minutes or units that you have left on the cards.

You may have to also activate cards at certain times. Most of the phones require that you activate a pre paid card at least every three months. Trac phones allow you to add airtime at any given point, however, you must do it before the allotted scheduled time or you may face disconnection. If this happens, all you have to do is reactivate your phone online or over the telephone. It is not a big ordeal and can be taken care of easily.

Having a trac phone will give you freedom and keep you in line when it comes to your spending habits. You will have the security of knowing that you can call when you need to and also know that you can add as much air time as you want to your phone. You will enjoy your phone and not having to worry about high monthly cell phone bills.

Copyright 2006 - Agust Hauksson. Agust is a regular contributor of articles to many online publications. Find more great information at: http://www.trac-phone.org/

Cellular Phone Company

Cellular phone company list.

There are many large cellular phone companies that operate in the USA. Each cellular phone company provides various cellular phone services and offers a number of cellular phone plans. Many of these companies limit their presence to a select number of states. Services that each cellular phone company offers to the residents of the states where that company operates range from local cellular phone plans to national long distance plans. Prices and promotions vary from company to company. Most important US cellular phone companies include, but are not limited to AT&T Wireless, Sprint PCS, T-Mobile, Cingular Wireless, Verizon Wireless, Nextel, and others.

AT&T Wireless as a cellular phone company.

AT&T Wireless is a large cellular phone company with service almost all over the nation, including the state of Alaska. AT&T Wireless uses TDMA technology and is starting using GSM technology. It provides digital services as well as analog services in many areas. AT&T Wireless has a large client base and is offering many different cellular phone plans to its clients. It also has a big selection of phones produced by such cellular phone market leaders as Nokia, Motorola, Samsung, etc.

Cingular Wireless as a cellular phone company.

Cingular Wireless is a large cellular phone company that operates on the east and west coasts, but doesnรขโ�ฌโ�ขt offer any services in the Midwest. Cingular Wireless uses TDMA and GSM technologies. It also offers a big selection of cellular phone plans and cellular phones.

T-Mobile as a cellular phone company.

T-Mobile, formerly Voicestream, is a large cellular phone company offering cellular phone services in many areas. According to T-Mobile, they have coverage areas in over 80 countries. T-Mobile uses GSM technology. T-Mobile is a fast growing company that increases its share of the market over time. It successfully competes with other cellular phone companies by providing competitive prices for its large selection of cellular phone services.

Visit http://www.camera-cell-phones-2u.com

Polyphonic Ringtones - A Useful Babysitting Aid?

Polyphonic ringtones have turned cell phones from an ordinary communication tool into a multi functional device with a variety of purposesรขโ�ฌโ��one of which is entertaining bored children.

As a father of an active toddler, I often find myself in situations where my child is a) about to break something very expensive, b) screaming in a public place. The most obvious solution, of course, would be to give him a toy to keep him amused. But as any parent knows, toys do not work when they are supposed to. They will be flung to the floor (or worse, at the strangers sitting at the next table). In emergency situations like that, I bring out my phone.

Thereรขโ�ฌโ�ขs something about the polyphonic ringtones that provide a hypnotic, calming effect on small children. They listen to it, over and over again. My sonรขโ�ฌโ�ขs favourite, the end credit theme of Sponge Bob, has been known to keep him seated in one place for five minutes. For an 18 month old, thatรขโ�ฌโ�ขs nothing short of a miracle.

For that reason, I always keep a number of polyphonic tones that my son might like. The Barney Songรขโ�ฌโ��the anthem of all toddlers and their unfortunate parentsรขโ�ฌโ��is armed and ready whenever we enter a restaurant. There is also, for some mysterious reason, Brian McKnightรขโ�ฌโ�ขs "One Last Cry." I donรขโ�ฌโ�ขt know why he likes it, or even when he first heard it, but we use it whenever he goes to the paediatrician and needs to stay still for a shot. (For those who will accuse me of not raising my child properly by exposing him to cheesy ballads, I defend myself by saying that he also likes The Beatles and John Coltrane.) Yes, even the most modern songs have been converted into polyphonic tunes. Of course the classics are thereรขโ�ฌโ��my wifeรขโ�ฌโ�ขs "Dance of the Sugar Plum Fairies" sounds particularly fairy-like in its polyphonic form. Download whatever you like. Or whatever your child likes, even if you hate it, because we all know heรขโ�ฌโ�ขs the boss.

I have a theory that the reason children like polyphonic tones is that it has that music box quality: delicate, tinkling rhythms. Though deeper and less metallic than the blips of music boxes of old, it still sounds equally as magical to the innocent ears of a child. And, of course, there is the advantage that polyphonic tunes are now more diverse than the standard music box themes of Fur Elise, and I do not have to deal with a pink ballerina. (Barney is bad enough.)

Who wouldรขโ�ฌโ�ขve thought that a mobile phone could be such a useful babysitting aid, or that polyphonic ring tones would rank as high as disposable diapers in the parentsรขโ�ฌโ�ข list of modern inventions to be thankful for. While it does have a lot of uses in the adult worldรขโ�ฌโ��with everyone in the room carrying a mobile phone, having a unique ring tone lets you know when itรขโ�ฌโ�ขs your callรขโ�ฌโ��its greatest contribution to society is the peace it provides frazzled parents. Yes, music does have the power to soothe the "savage beasts".

Philip Nicosia is the webmaster of Ringtones.lt, a site specialising in the different genres of ringtones, including polyphonic ringtones, true tones and mp3 ringtones.

Pay-as-you-go Cell Can Save You Money

You can save money by purchasing a pre-paid cellular phone.

Pre-paid and pay-as-you-go cellular phone plans allow you to buy time as you need it. Minutes are usually purchased via a voucher card that is worth so many minutes. You simply activate the minutes when you need them.

You may have already looked at a pre-paid plan. You will notice that you aren't saving per minute. In fact, pay-as-you-go plans cost you more per minute. The plans are ideal for emergency use, for those who don't make hardly any calls per months and for teenagers and children.

With a pre-paid plan, you aren't locked into a typical cell phone contract that lasts two years. You are free to stop purchasing minutes at any time. The main advantage to pre-paid cells is that you can't go over your minutes and run up several hundred of dollars without knowing it. Your phone won't use more minutes than you have dollars.

In general, this is what makes pre-paid cell phones ideal for teens and pre-teens. It seems as if you are old enough to talk on a phone, you have your own cell phone. With a pre-paid plan, you know exactly how many minutes your children are using. Some cell phone companies offer phones for children that only dial three or four numbers that you preset. This also helps to eliminate a large cellular phone bill out of the blue.

Most pre-paid plans will cost you from $10 for 30 minutes to $80 for 400 minutes, depending on the company. Minutes often expire after one month to a year, so make sure you know how long your minutes are good before you start saving them up.

Pre-paid plans usually come with the basics of call waiting, voice mail and national long distance. There may be restrictions to calling within certain areas or other restrictions. Make sure you read the fine print thoroughly.

You know, with pre-paid cell phone plans, no one should have to ask you to put them on your account. They are a great option for your children, or for those who rarely ever use a cell phone.

Compare the price of the pre-paid service minutes with a regular cell phone package. You might find that one is absolutely cheaper than the other. But make sure you look at all the details before you make your decision.

Yes, a pre-paid plan costs you more per minute. But it keeps you from going over your plan and having $.40 a minute tacked onto your calls. For example, if you pay $80 for 400 minutes, you are basically paying twenty cents per minute. You could purchase a cellular contract plan for around $39.99 for 400 minutes. That equals around ten cents per minute.

But if you were to go over your contract minutes, you will most likely have to start paying $.40 per minute on all calls over your plan. You would only have to go over by 100 minutes to break even with the pre-paid plan. With the pre-paid plan, you can't go over.

With a pre-paid phone, you may be paying more per minute, but you have a control set in place that prevents you from spending more than you budget for your cellular phone.

Martin Lukac represents http://www.RateEmpire.com and http://www.1AmericanFinancial.com, a finance web-company specializing in real estate and mortgage rates. We specialize in daily updates, mortgage news, rate predictions, mortgage rates and more. Find low home loan mortgage interest rates from hundreds of mortgage companies!