Dartagnan Pluck vol.2
New member
Video calling wont work because it requires at least UMTS, and also no American network currently supports video calling as far as I am aware.
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Someone explain the problem with the N95 in the USA
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Typicalover
New member
Wirelessly posted (Series 60: Mozilla/4.0 (compatible; MSIE 6.0; Symbian OS; Nokia E61/0618.06.05; 9730) Opera 8.65 [en])
correct thoigh i thought i had read recently that cing (or ATT or whatever they are this week) was working on it.
-olly
correct thoigh i thought i had read recently that cing (or ATT or whatever they are this week) was working on it.
-olly
adamlambertfanatic
New member
HSDPA is available, but the North American networks aren't using the same frequencies as the European networks. Hence a European UMTS/HSDPA handset's 3G features can't be used on a North American UMTS/HSDPA network.
I posted this in another thread but i think it will answer your questions:
Basically you've got GSM and WCDMA
GSM bands are 850/900/1800/1900. In the US, we use 850/1900. The other bands are worthless in North America.
GPRS and EDGE are simply the data side of GSM. You have to have the right GSM band for the EDGE on that band to work.
GPRS roughly equals dialup, EDGE is similar to the "advanced" dial-up speedbooster things.
WCDMA = UMTS = 3G
WCDMA channels voice and data the same, this is how you can have a voice call at the same time you're transferring data, and is one of the benefits over EV-DO (CDMA variant).
HSDPA is to UMTS what EDGE is to GPRS. It's the same thing, just a speed booster.
In Europe, their 3G is on the 2100 band.
In NA, our 3G is on 850/1900. These have no connection to the GSM bands of the same frequency.
T-mobile USA's 3G will someday launch on 2100, but they will use the 1700 upstream, which is different from Europe.
So to answer your question simply, in order to import an HSDPA phone and be able to use the 33G service on it, you'd need to have Cingular as your carrier and make sure the phone has HSDPA 850/1900. The only devices on the market with this is the HTC TyTn and the newly announced HTC Athena. Other than that, it won't work.
Basically you've got GSM and WCDMA
GSM bands are 850/900/1800/1900. In the US, we use 850/1900. The other bands are worthless in North America.
GPRS and EDGE are simply the data side of GSM. You have to have the right GSM band for the EDGE on that band to work.
GPRS roughly equals dialup, EDGE is similar to the "advanced" dial-up speedbooster things.
WCDMA = UMTS = 3G
WCDMA channels voice and data the same, this is how you can have a voice call at the same time you're transferring data, and is one of the benefits over EV-DO (CDMA variant).
HSDPA is to UMTS what EDGE is to GPRS. It's the same thing, just a speed booster.
In Europe, their 3G is on the 2100 band.
In NA, our 3G is on 850/1900. These have no connection to the GSM bands of the same frequency.
T-mobile USA's 3G will someday launch on 2100, but they will use the 1700 upstream, which is different from Europe.
So to answer your question simply, in order to import an HSDPA phone and be able to use the 33G service on it, you'd need to have Cingular as your carrier and make sure the phone has HSDPA 850/1900. The only devices on the market with this is the HTC TyTn and the newly announced HTC Athena. Other than that, it won't work.
skapunk4ever
New member
It means that its UMTS (WCDMA)/HSDPA features can't be used in North America.
airsofter7
New member
well .. it's less that .. and more that for the longest time needing a cell phone wasn't necessary. I think the US has stepped it up considerably in the last 3 - 4 years to become "on par" with Europe. It can always be better, but we are doing well enough.