When considering wireless cellular phone plans, there are quite a few basics that you should not forget. Neither are plans nor providers all the same; whether you are going overseas for a vacation or a business trip, pay attention to what you are going to commit to! The first thing that you have to remember is that there are quite a few various types as far as phone networks and radio frequencies are concerned. Wireless communication requires that we send data via radio frequencies and there are a number of established national bands. If you are simply going to use your phone in North America, this should not bother you too much. On the other you ought to know that two radio frequencies prevail in North America and there are two others which operate widely across the rest of the world. You need to be sure that your phone will "talk" within the frequencies. Wireless cellular phone plans are available within different networks. By far the most dominant is the GSM network, although you may be surprised to learn that the CDMA network has more subscribers in the US. Only two of the major service providers - T-Mobile and AT&T - operate within the GSM network. For flexibility and portability, especially abroad, you are advised to go with the GSM network. GSM phones differentiate themselves from others via the use of the SIM - a miniature computer which helps store a variety of phone lists and other personal information. It is usually possible to remove the SIM from one unit and put into another, without any problems at all. However, some cell service providers, being interested in their bottom line, will "lock" their particular phones so that they can only be used with the SIM card that they provide. You should know that it is possible to unlock these phones even if the provider does not want you to do so. The most modern type of cell phone is what's called a quad-band phone. This means that it will work on any of the four major radio frequencies. It follows therefore that a quad band GSM phone is the most flexible type of unit that you can have and can generally be made to work anywhere. As technology keeps changing and getting better, you will find options and extra flexibility allowing your voice to be translated in data which can then be transmitted through the Internet or even through VoIP technology. Wireless cellular phone plans will in the near future feature enhanced connectivity, interchangeability and will likely come with few of the traditional restrictions imposed by the marquee carriers. It is vital that you understand the differences in technology and the notable variations that exist amongst wireless cellular phones. Understand your requirements before committing to your future needs.
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