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Cellular forums Home > Archive > Cell Phones in Great Britain > January 2008 > Quadband & Dual Mode
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Quadband & Dual Mode
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| dennis@fake 2008-01-30, 7:33 am |
| Can anyone explain what the difference is between quadband (i.e. 4
bands) & dual mode ? Does a quadband handset work wherever there is a
signal ?
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| ChrisM 2008-01-30, 7:33 am |
| In message 47a0656d_3@mk-nntp-2.news.uk.tiscali.com,
dennis@fake <dennis@fake> Proclaimed from the tallest tower:
> Can anyone explain what the difference is between quadband (i.e. 4
> bands) & dual mode ? Does a quadband handset work wherever there is a
> signal ?
There is 4 different frequencies used by GSM handsets round the world. I
can't remember them offhand, but the UK uses 2, US uses 2 (one the same, one
different) and other parts of the world use others out of the 4.
A quad band phone should work anywhere in the world that has a GSM phone
network. Some places (Japan?) have limited or no GSM coverage (they use a
different system) so your quadband phone won't work.
A dual mode phone works with more than one technology, so (say) GSM and CDMA
(2G and 3G) or maybe GSM and WiFi(??)
Disclaimer: The above is based on a layman's understanding of the
technologies. Maybe a more qualified person could expand on, or maybe
correct my answer...
HTH
--
Regards,
Chris.
(Remove Elvis's shoes to email me)
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| Steve Terry 2008-01-30, 7:33 am |
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"ChrisM" < chris_mayersblue@sue
deyahoo.com> wrote in message
news:FeWdnYYqWs1J8T3
anZ2dnUVZ8s2mnZ2d@bt
.com...
> In message 47a0656d_3@mk-nntp-2.news.uk.tiscali.com,
> dennis@fake <dennis@fake> Proclaimed from the tallest tower:
>
>
> There is 4 different frequencies used by GSM handsets round the world. I
> can't remember them offhand, but the UK uses 2,
950MHz and 1800MHz
>
US uses 2
>
850MHz and 1900MHz
Steve Terry
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| Dennis Ferguson 2008-01-30, 3:33 pm |
| On 2008-01-30, dennis@fake <dennis@fake> wrote:
> Can anyone explain what the difference is between quadband (i.e. 4
> bands) & dual mode ? Does a quadband handset work wherever there is a
> signal ?
The only place I've heard the term "dual mode" used is in North America,
where it describes phones which support both CDMA and AMPS (1G analogue).
Quadband describes GSM phones, which are a whole other thing. I guess
"dual mode" could also refer to phones which support both GSM and (3G) UMTS
(these may support 5, or even 6, bands), but I've not heard that used.
Dennis Ferguson
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