Cheap nfl jerseys The Cell Phone Mysteries, What are Dual Band, Tri Band and Quad Band Cell Phones and Where Will They Work?

The world is a confusing phone these days, especially for those who wonder, start as a company cell phone. Few things are as confusing perhaps as the frequencies of GSM and GSM phones that operate to be in parts of the world, but not in others.
Several mobile pho cheap nfl jerseys nes and GSM frequency bands can be especially confusing for those who ask how to start a business phone.
So what is the background behind the GSM network?
The GSM network has been proposed by a group of experts and decision makers in the EU in 1982 and did not take long to be adopted by consumers and manufacturers of mobile phones on the new network after their first appearance in 1991. It was not long before GSM coverage in an increasingly growing number of countries.

The GSM world has been spectacular. There were more than a million fans in 70 companies in 30 countries, end of 1993.
Not only did the new GSM mobile network send and receive all of its information digitally, making it the first 2G mobile phone to be developed it also gave users a great deal of freedom on what they did with it. For the first time they were able to send short written messages to each other for a fraction of the price of a phone call, they could change their carrier and/or go to a different country without getting a new phone.

All they needed to do was to take one GSM SIM card out and replace it with another GSM card and they were in business.

But, as the unknown powers of the world decree, things shouldn't be that easy and the GSM frequencies set by most of the GSM cowboys jersey networks had already been assigned to other purposes by the powers that be.

So, in a situation very similar to TV watchers and people with surveillance systems, a phone that worked in Sussex England wouldn't pick up anything in San Antonio in the US. Basically it wasn't a case of one GSM frequency fits all.

As a result, many cell phone makers c nfl apparel reate cell phones that can work with more than one band with some working with as many as 4 bands.

Still this doesn't mean there aren't questions and people are often left asking:
* What is GSM?