Archive for the ‘Cellphone’ Category
What Does 3G Mean?
March 4th, 2010 | 
Author: Nowadays, everybody has a mobile phone. Whether they’re on a contract or a pay as you go tariff, the mobile phone has become an essential item for many people. this article will be taking a look at the the mobile phone’s history – as well as its future – in order to find out more about the now essential telecommunications device.
Mobile phones started life as the two way radio, which was also called mobile rigs. these were installed in vehicles such as minicabs, police cars and ambulances, but were not strictly mobile phones as they were not normally connected to the telephone network. while the very first mobile phones were installed permanently in vehicles, later versions such as the transportables, also called bag phones, could also be carried, and can be used as either portable or as mobile two-way radios.
The first generation of mobile phones are often called 1G. These mobile phones are the analog devices that were introduced in the eighties & continued until being replaced by 2G mobile phones, which ran on digital networks. in fact, even though 1G & 2G systems use digital signals to connect the radio towers to the rest of the telephone network, the voice itself during a phone call encoded to digital signals in 2g while voices on 1G phones aren’t.
Second generation, also called 2-g, mobile telephones were introduced in the nineties. 2-g phone systems were characterised by their use of digital transmission and the introduction of advanced and fast phone to network signalling.
The birth of 2-g systems saw telephones move from friendly 1g telephones to little handheld items, which were much more portable. this change was possible through technological developments including more advanced batteries and energy saving electronics.
The second generation mobile telephones had severaladvantages over 1g items. These included text messaging, which became possible on gsm networks initially and eventually on all digital networks. the earliest machine-sent message was sent in 1991 in the uk. the earliest person to person sms text message was sent in 1993 in finland. sms text messaging soon became the preferred method of communication and the public now prefer sending text messages to placing voice calls.
3-g is the term applied to the third generation of mobile phone standards & technology. 3g follows 2g mobile phone technology.
The birth of 3-g technologies allow network operators for instance Vodafone give their users a larger range of more advanced services. These include video calls& wireless internet.
Even though 3-g was successfully introduced throughout the world, issues have been raised by both 3-g providers & users, comprising of costly phones. in addition to this, there’s numerous differences in the licensing terms.
Ever since the launch of 3-g mobile phone technology. people have been talking about 4g. 4g technology will signify the future of mobile telephones, creating the most sophisticated handsets and best services yet. in actual fact, one of the next services to be developed is thought to be live streaming of radio and tv shows to 3-g handsets is and shops including real and disney recently announcing that they’ll be offering services like these.
In conclusion, even though the history of mobile phones they have come a long way in the past few years, it also indicates that they’ll go even further still.
Mobile phones started life as the two way radio, which was also called mobile rigs. these were installed in vehicles such as minicabs, police cars and ambulances, but were not strictly mobile phones as they were not normally connected to the telephone network. while the very first mobile phones were installed permanently in vehicles, later versions such as the transportables, also called bag phones, could also be carried, and can be used as either portable or as mobile two-way radios.
The first generation of mobile phones are often called 1G. These mobile phones are the analog devices that were introduced in the eighties & continued until being replaced by 2G mobile phones, which ran on digital networks. in fact, even though 1G & 2G systems use digital signals to connect the radio towers to the rest of the telephone network, the voice itself during a phone call encoded to digital signals in 2g while voices on 1G phones aren’t.
Second generation, also called 2-g, mobile telephones were introduced in the nineties. 2-g phone systems were characterised by their use of digital transmission and the introduction of advanced and fast phone to network signalling.
The birth of 2-g systems saw telephones move from friendly 1g telephones to little handheld items, which were much more portable. this change was possible through technological developments including more advanced batteries and energy saving electronics.
The second generation mobile telephones had severaladvantages over 1g items. These included text messaging, which became possible on gsm networks initially and eventually on all digital networks. the earliest machine-sent message was sent in 1991 in the uk. the earliest person to person sms text message was sent in 1993 in finland. sms text messaging soon became the preferred method of communication and the public now prefer sending text messages to placing voice calls.
3-g is the term applied to the third generation of mobile phone standards & technology. 3g follows 2g mobile phone technology.
The birth of 3-g technologies allow network operators for instance Vodafone give their users a larger range of more advanced services. These include video calls& wireless internet.
Even though 3-g was successfully introduced throughout the world, issues have been raised by both 3-g providers & users, comprising of costly phones. in addition to this, there’s numerous differences in the licensing terms.
Ever since the launch of 3-g mobile phone technology. people have been talking about 4g. 4g technology will signify the future of mobile telephones, creating the most sophisticated handsets and best services yet. in actual fact, one of the next services to be developed is thought to be live streaming of radio and tv shows to 3-g handsets is and shops including real and disney recently announcing that they’ll be offering services like these.
In conclusion, even though the history of mobile phones they have come a long way in the past few years, it also indicates that they’ll go even further still.
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The New Cell Phone Directory
Talking about searching someone or somebody’s phone number is very difficult. Although, you can find the name but you cannot go further than that. The reason is that privacy. You and I agree that privacy is very important. It provides any secret and important information of people. Hence, it is the same as finding cell phone number is also privacy. There are such things most people use to cover for their privacy. Therefore, if you ever see a privacy meeting, it means that the meeting is for certain people who have authority only. In other hand, have you ever heard about cell phone numbers? This is a directory system to find all phone number safely. Cell phone number has a privacy law. Beside that, it also provides a record phone to privileged people, personal or organization. Yet, all of them were changed. Today, you can lookup cell phone number effectively. The most important thing is that you do not need an expensive private investigator anymore. However, if you still find any difficulties in finding cell phone number, I can guarantee that cell phone directory is new. You should remember that this case only occur when you verifying the phone number. In short, do you want to try with this lookup cell phone to anyone?
Harmful Effects of Cell Phone Radiations
In the earlier days, cellular phones were of brick size and they were usually attached to immobile surfaces such as cars etc. However, developments in technology, have led to the introduction of many pocket sized mobile phones. The mobile phone depends upon the use of radiations for its function. Since the whole world has been lured by this necessity, there is always a concern about the harmful effects of the radiations.
The harmful effects of the cell phone radiations were exposed in the year 1993. A case was reported in Florida, wherein a law suit was filed by a man, who claimed that his wife had been affected by brain tumour, because of the use of cell phone. It was only after such a case, that numerous researches have been conducted to find out if the cell phones really emit radiations that are harmful.
While some of the studies indicate that the microwaves emitted by the cell phones doubled the cancer cells in mice, the Cellular Telecommunications Association has spent so much on the research of the harmful radiations emitted by the cell phones. It still remains a controversy and it is still not proved whether cell phone radiations are harmful or not. The cell phones have been supposed to give out what is known as the Electromagnetic Radiations. As the phones are powered by electricity, they are believed to give out their electrical and magnetic fields. These radiations are emitted by other electronic goods such as microwave oven, electric clocks, computers and other such appliances. Such radiations come under the category of non ionizing radiations.
Non ionizing radiations are those which do not have the energy to cause ionization, which is they do not have the sufficient energy, to break apart molecules and atoms and turn them into ions. Ionizing radiations however, have high energy and they break apart molecules and atoms and turn them into ions. Examples of such harmful radiations are Gamma radiations and X-rays. When human cells are exposed to such harmful radiations, the DNA within the cells gets damaged, or their sequence gets changed resulting in mutations and birth defects. According to some research, the relation between the radiations and the effects of them on the users can be summarized as follows:
· The users of cell phone do not run a high risk of getting cancer than non users.
· Frequent users of cell phones do not have the risk of getting cancer or non malignant tumours, than those who use the phones rarely.
· It is a myth that brain tumours and cancers tend to develop on the side of the head, at which the phone has been used.
One of the observable harmful effects of mobile phones however has been the thermal effects. The microwave radiations cause dielectric heating. Here any dielectric material such as a living tissue gets heated up by rotation of polar molecules of the electromagnetic radiations. Therefore for the person who uses a cell phone, the heating will occur at the surface of the head.
As the subject by itself is controversial, the cell phones can be utilized judiciously and purposefully, as prevention is always better than cure.
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