adamoxo

What’s the difference between quad band and dual band?

Just reading about phones and came across the terms quad band and dual band. What do they mean?

Most Useful Answer JanSt  Mar. 31, 2011 at 11:39

Not to confuse things, here's Vodafone's take:
European GSM networks generally use 900MHz and 1800MHz frequencies and most UK phones can use both - these are called dual-band phones.

Some networks in regions such as the USA, Canada, the Caribbean and South America use the 1900MHz frequency. To use these networks you will need a tri-band phone. This phone lets you use not only the 900MHz and 1800MHz frequencies but also the 1900MHz frequency.

Networks that operate on the 850MHz frequency are not very common however, some Southern and Central American, and Caribbean networks do use this frequency. There are a few quad-band phones which use the 850MHz networks as well. ( source )

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JanSt / MOD  Mar. 31, 2011 at 11:39

Not to confuse things, here's Vodafone's take:
European GSM networks generally use 900MHz and 1800MHz frequencies and most UK phones can use both - these are called dual-band phones.

Some networks in regions such as the USA, Canada, the Caribbean and South America use the 1900MHz frequency. To use these networks you will need a tri-band phone. This phone lets you use not only the 900MHz and 1800MHz frequencies but also the 1900MHz frequency.

Networks that operate on the 850MHz frequency are not very common however, some Southern and Central American, and Caribbean networks do use this frequency. There are a few quad-band phones which use the 850MHz networks as well. ( source )

CTPAHHIK  Mar. 31, 2011 at 13:42

AT&T operates on 850MHz. You might end up without service in US without 850MHz band.

I'm not sure about Canada and Mexico, but assuming entire North America has similar standards it safe to say that entire North America operates on 850MHz

adamoxo  Apr. 1, 2011 at 14:30

Thanks folks

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