Mobile Bands: Dual-Band/Tri-Band/Quad-Band

Dual-Band

also known as dual-band or dualband. A dual-band phone operates at both the 900 MHz and 1800 MHz spectrum. Dual-band works in Europe, Africa, Asia, Australia, New Zealand and much of South America.

In Europe two bands (900/1800 MHz) are used in the same country to improve coverage.

In America two bands (850/1900 MHz) are used in the same country to improve coverage.

Dual band phones are also used to enable roaming between different countries. For example, a cellphone with dual band 850/1800 MHz will work in both the United States (850 MHz) and India (1800 MHz).

Tri-Band

also known as tri-band or triband. A tri-band phone operates on three frequency bands, 900 MHz, 1800 MHz and 1900 MHz, allowing you to use it in Europe, Africa, Asia, nearly all of North America, Australia and New Zealand

2G Triband phones are mobile phones that support the GSM 900/1800/1900 MHz bands commonly sold in Europe, Asia and Africa, (for example the LG KE820 is a triband mobile phone that is sold in Europe, but works in big cities of America but not so well in suburbs and rural areas).Or alternatively the 850/1800/1900 bands (commonly sold in the Americas). The Motorola V300 formerly carried by Rogers Wireless used a rare combination of 850/900/1900. A 2G Quad band (850/900/1800/1900) offers more coverage and is now quite common.

A 3G Quad band offers more coverage.

Quad-Band

also known as quad-band or quadband. A quad-band phone allows you to roam almost anywhere globally. It covers the 850 Mhz, 900 MHz, 1800 MHz and 1900 MHz frequency ranges. Many countries in South America only have 850 MHz GSM service while both 1900 MHZ and 850 MHz GSM services are supported in the USA. 99% of all countries use the GSM standard. We believe eventually GSM will be the only cell phone standard in the world.

A quad-band mobile phone is used to designate a phone that can operate in the following GSM frequency bands:

1. 850 MHz (U.S./Canada/Latin America/Brazil (Only the carrier Vivo))
2. 900 MHz (Africa/Europe/Brazil/Africa/Australia/Asia (ex Japan and S. Korea))
3. 1800 MHz (Africa/Europe/Australia/Asia/Brazil)
4. 1900 MHz (U.S./Canada/Latin America)