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h the advent of cell phones, communication has become a simple and quick process. Cell phones enable one to stay in touch with his friends or family from anywhere and at any time. These days, almost everyone has a cell phone to make his/her life convenient. With the market flooded with number of cell phone models, it is important to have some basic knowledge about cell phone types and models. This will enable you to pick up a cell phone that best meets your needs.
Cell phones are either locked or unlocked. Locked cell phones are those that can be used on only one cell phone carrier. For instance [link widoczny dla zalogowanych], AT&T locked phone can be used only with that particular carrier and not with T mobile carrier or any other. Locked cell phones prevent the user from switching to another carrier. On the other hand, unlocked cell phones can be easily used on different mobile phone carriers. They offer greater flexibility to the user in terms of changing services as and when required.
So [link widoczny dla zalogowanych], if you travel frequently, it is advisable to buy GSM phone. GSM phones come in four kinds of frequencies. Although it is better to buy GSM phones that support all the frequencies but you will find that most of them use only two or three frequency bands. While most of the countries use frequency bands of 900 MHz and 1800 MHz, US makes use of the combination of frequency bands 850 MHz and 1900 MHz. It would be good to buy GSM phone that uses frequency of 850 MHz and 1900 MHz, if you are living in the US. But, when traveling outside, buy GSM cell phone cell phone that supports 900 MHz and 1800 MHz.
There are various benefits of buying a GSM phone. You can use your GSM cell phone with any provider. This is of great use when you are traveling outside the US. With a GSM phone [link widoczny dla zalogowanych], you are neither required to get a new mobile connection nor float your number to everyone back at home. GSM service is available in as many as 200 different countries. All you need to do to continue using your GSM cell phone is buy a new SIM from any service provider and put it in your phone. It is an easy and fast way to stay connected!

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