Nokia N91
WCDMA
I see that this phone and a few others have WCDMA in addition to whaterever netowrk type they support. Does this mean that phones that use GSM and WCDMA can make and receive calls on both networks? or is it just to compete with CDMA's video and music offerings?
I really like this phone and some others I've seen with WCDMA, but at my house only GSM phones get good service (southern, MA) but if you go to the more urbanized parts it's all CDMA ( I only know because verizon and sprint get he serice out there).
Sorry if it sounds dumb but any clarification is appreciated thanks.
I really like this phone and some others I've seen with WCDMA, but at my house only GSM phones get good service (southern, MA) but if you go to the more urbanized parts it's all CDMA ( I only know because verizon and sprint get he serice out there).
Sorry if it sounds dumb but any clarification is appreciated thanks.
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cesar1001 said:Yes, but WCDMA 2100 is not used in North America. Cingular is the only WCDMA operator here and they are on 1900 and 850 MHz. As such the phone's CDMA capabilities only work when you are overseas (roaming, for example).
I see that this phone and a few others have WCDMA in addition to whaterever netowrk type they support. Does this mean that phones that use GSM and WCDMA can make and receive calls on both networks?
I am not sure if you are aware of it, but CDMA usually refers to Qualcomm's set of standards (cdmaOne, CDMA2000, etc, used by Sprint PCS, VZW, Telus, etc), which is different from WCDMA. The two are totally incompatible.
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The WCDMA (UMTS) band that the new 3G handsets are offering are really only handy when you are in Europe where the 2100MHz band is used for public cellular handsets for super-high-speed data. Close to 400Kbps speed. But, in USA that frequency band is taken by gov't agency and inaccessible to the public. But, it you get a handset with GSM 900/1800/1900 and UMTS (WCDMA) 2100 - go to Europe, get a prepaid sim from Vodafone or Orange in Europe and test out the 2100 band. You will see many of the 3G phones have dual cameras - for video conferencing. I just ordered a MDa Pro (JasJar) which has it. But alas, it is useless in USA. I believe Cingular/ATT is rolling out a US version of 3G using a diff freque ncy range, which I am sure is years ...
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