Welcome to the Tri Band mobile phones page, if you travel overseas and are buying a new mobile phone then you should buy a Tri Band mobile phone as they work better overseas.
Mobile phone networks in different countries or continents work on different GSM bands so a mobile phone that can only use one band will not work on any other band so therefore will not work in most other countries. So a Tri Band mobile phone can use three bands so will generally work fine in Europe, America and Australia, there are also Quad Band mobile phones that have an extra band.
If you are traveling to a specific country then you should check what band the networks in that country use to see if the mobile phone you are buying supports that band. If it does then you can roam from country to country as most UK networks allow you to use the foreign networks while you are traveling.
