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Cell phone - not a luxury but a means of communication! The expansion of mobile networks and a steady decline in tariffs and prices for phones themselves led to the fact that "Mobile" may be found not only in Mercedes successful businessman, but also in the pocket of the student, even in a bag grannies pensioner! However, these phones are likely to be different: a businessman - a model of business class, the student chooses an image phone, a lot of pensioners - economy class. However, the division into classes rather conditional: for example, hit business class last year, Ericsson R520, now belongs to the budget models, although the functionality it can still give odds to many modern tubes. The market situation is changing

Choice of cell phone varied from man to man according to class and needs. Some people don’t want to bother with the complex functional phones. Some people like styles models phones and some like to use functional complex phone. But most people do not like to use a phone for the long time. So now a days it’s a good business going on in used cell phone .some firm doing business on recycle cell phone. So when you move to buy a cell phone you have to keep in mind that there is a little chance to trade in cell phone. So when I move to change the models or brand did I have the all options to make a good trade in used cell phone?

Buyer must not only seek an answer to the question: "How to choose a cell phone?", But also to determine the operator and tariff plan. And it must be done before selecting your phone model: for each operator uses its standard mobile. Suppose you decide to use network services "Sonnet" - then you need a CDMA-compatible device, the most common GSM-phone will not do! Currently, mobile telephony market in the following standards: GSM, NMT-450i, D-AMPS, CDMA. In principle, if you do not have any special reasons to choose a certain standard - is to stay on GSM, the most universal and widespread. This standard operates several providers (such as MTS, Bee Line and Megafon) and you can always change the operator - it is sufficient to simply plug in another phone sim-card. Advertised on television and exposed in the windows of shops relation phones - phones via GSM. In the future, if not otherwise stated, we will discuss this standard phones.

Many know that the phones are Motorola, Samsung or Panasonic, but not all know that phones are gray and white. If you see in the window with the phone suspiciously modest price - a sure sign of "gray" delivery. From the "white" (officially supplied by the manufacturer phones), they differ in that they were not originally intended for general sale and can only be used in combination with sim-cards a certain operator (hence the low price - a discount to the buyer of the operator who chooses to use its services) . To take advantage of these phones they have to "decode" - change the firmware so as to remove the restriction on the operator and enter the support of the Russian language. As a result of buying the phone turns into a lottery: the winner to save a few percent of the cost of the apparatus, loser maetsya with "buggy" phone.

Sometimes craftsmen offer by flashing the phone there to add some features. In principle this is possible, for example Siemens A55 altering in C55, Siemens SL45 in Sl45i, Ericsson T68 becomes a SonyEricsson T68i, add Russian menus, Java support, etc. In principle there is nothing wonderful, different phone models of one manufacturer may have very minor hardware differences (or not having them at all) - enough to put the old phone to new firmware. Moreover, some phones of different firms are identical, such as Alcatel One Touch 531 and Mitsubishi Trium M320, but the first officially comes to Russia (and thus have Russian firmware) and the second carry in the form of gray "from Poland. All of these improvements is one very serious disadvantage: in the end you get all the same gray phone, so even without the guarantee.

The next step after selecting a standard connection - to determine a set of services (which must meet a set of phone functions). Consider some of them:

Messaging

Currently, there are three kinds of messages: SMS, EMS and MMS.Naibolee circulated SMS (Short Message Service) - the message is from a small text, no larger than 160 characters. The small cost of an outgoing message (1,5-2 USD), and free incoming made this service very popular. To fully make use of SMS, the phone should correctly display the Russian text. For a set of messages using the keypad need to have Russian letters on the buttons. Well, if the phone is "sewn" Russian Dictionary for fast text (also known as Predictive T9). You can send messages not only from the phone, but also from the Internet. Some operators allow you to receive e-mails as SMS - a very useful feature, although the restriction on the size of the message does not allow "a full-fledged" e-mails. However, some phones allow the "glue" several messages into one, thus increasing the length of the message (Siemens M55 - up to 760 characters, Samsung SGH C100 - up to 918).

EMS (Enhanced Messaging Service) extends SMS: You can format text (bold, italics, underline), there is no restriction on the size. You can include in the message simple images (including animated) and melody. But if the recipient's phone does not support the standard - it will take only the text of the message, ie ordinary SMS. More modern is the MMS (Multimedia Message Service) - Standard allows you to send and receive full images and sounds. The standard is in development in the future the possibility of transferring video. In fact, it is a hybrid of SMS and e-mail: MMS message is most like e-mail with attached multimedia files. No wonder that this protocol will only work on phones that support GPRS - standard mobile Internet.

Internet (GPRS)

Availability of GPRS can send and receive emails, go to Internet servers, use the phone as a modem. Ultimately, the usefulness of this service is determined by the capabilities the phone: he should at least have a good display for a full display of information. If you are going to go online with a laptop or PDA via a mobile phone - is to decide in advance which type of connection to the phone will be used (for example through a connecting cable or infrared). Further development of technology GPRS - EDGE. With this technology the data transfer rate is doubled. However, at the time of this writing, EDGE does not use Russia's operators, so that while buying the phone that supports this technology was premature.

Data

If you want to transfer to another phone picture or ringtone, download data from your computer, connect your laptop or handheld computer to the Internet via the phone - then you can use the data. The most technically simple and affordable way to connect to the computer - through a connecting cord that plugs into a USB or COM-port. In the presence of such connections and special software it is possible to edit the mobile phone address book on your computer, mobile phone address book synchronization with the data of the computer, downloading music (for example, Siemens S55, you can download files MIDI), screensavers and logos, update phone firmware. In connection cable two drawbacks: lack of universality (different phones need different cables, you can only connect to a computer) and, oddly enough, the high price (they have to buy separately). Much more versatile connections built-in IR port (infrared port, IRDA) and radio Bluetooth. IR ports are more common, but using them is not very convenient, as you have to have a device at a short distance in the line of sight. And speed is small. Contact radio and faster, and your phone does not necessarily get out of his pocket - convenient! And you can buy special Bluetooth-headset - then you can talk on the phone, which is, for example, in the glove compartment of your car (and even dial numbers in the presence of voice dialing). Less, as in all good one - low prevalence of Bluetooth and high price.

What else should I look for when choosing a cell phone?

Polyphonic ringtones will provide your vehicle a unique "voice" that you do not confuse it with other people's phone calls. However, habitual normal phones without Polyphonic usually more shrill and it's easier to hear - so that the function of polyphony aesthetic rather than practical.

If you do not like to disturb others, then your phone must be vibration. Before you buy must try it - at different models of "vibration" has a different capacity.

Color display. What he did (as in resolution, and size) - so it is more convenient to use, the more information it can display. Another, sometimes no less important characteristic of the display - brightness. It is important that it was sufficient to use the screen in bright daylight.

Voice command and voice dialing, especially in combination with hands-free communications are indispensable in the car and other situations where using the phone's keypad is difficult.

Many models feature a voice recorder, but records for more than a minute or two is not enough internal memory of the phone. In such a case can be very helpful to use flash memory cards - recording time will increase tenfold. On the map you can record music in format mp3 - phone with the headset will turn into a compact player.

Digital camera. To obtain high-quality images embedded in the camera phone unusable: permission failure (eg a Motorola E365 max 640x480), yes and no optics. For photos, suitable for printing, it is better to buy a digital camera. Advantages of built-in camera - portability and the ability to instantly send photos to another phone or e-mail. You can also write your address book to accompany the photographs of the recipients, and card cardsharp taken advantage of the opportunity for peeping for handouts cards - those who pay attention to the lying on the table a regular cell phone?

Some of the phones sold removable panels or even the shell (sometimes panels are supplied to the new phone, such as the Nokia 6610 comes bundled with six different panels!). This opportunity will please you, if you like variety or are going to subsequently sell the phone.

Easy menu. Usually on the ergonomics OSD phone buyers pay attention after the acquisition of the phone. A pity, because not enough that the phone had certain functions, they have yet to be convenient to use! When you phone, try to look like on various sub-menus - this process should not cause irritation, you need functions should be easily accessible.

Some phones can run Java-based applications (the most popular games). If you want to take this opportunity to run these programs, find out first which ones you really come in handy (usually found on the Internet, and can run on your computer). To work with Java is not necessarily buy an expensive phone, this possibility occurs even at relatively low cost devices (Motorola C350 - about $ 100).

Becoming more common phones in the so-called case-book (also known as cot). This performance is very convenient - phone takes up less space, is excluded from being pressed accidentally and the screen is protected from damage. Often, these phones are supplied with two displays: a small external and internal large.

The most outstanding representatives of the family cell phones are a proud name of smartphones or communicators. Such devices more like a PDA with an antenna than on the phone. And inside they have the same Palm OS (Samsung i505) or Pocket PC (RoverPC S1, I-Mate), and in Nokia smartphones used Symbian OS, the successor of the famous operating system from the Epoc prematurely who had left the market Psion (Nokia 6600, Nokia 9210) . All good communicators, but the price and functionality, they are still inferior to bundle phone + PDA (especially if you communicate via Bluetooth).

Opportunities for phones more and more: the built-in flashlight to count calories. But no matter how hard the producers, the buyer must keep firmly in mind: first of all need a phone to talk to him. Therefore, the most important characteristics are such unpretentious settings as the weight, size, battery life and performance.