Originally Posted by solipsism
Regardless of the speed these networks have offered, in relation to phones there are no chipsets Im aware of that can take the 20Mbps speeds and sure the weak ARM processors and low RAM could even handle that much data at one time at this point. Wes these radios as USB and EC/34 cards first where size and power usage is less of an issue.
Try an TI OMAP3640.
However you've answered your own argument it's not a "weak ARM processor" and "low RAM" that are the problem it's the fact that since you only really need about 5Mbit/s even for high quality video streaming and in the absence of a large screen and flash you don't even need 5Mbit for a decent web experience. What on earth is the point in building a handset that drinks power servicing a 20Mbit/s channel when you can just build it in to a laptop instead since the only current application for that amount of bandwidth in a mobile device is tethering it to a laptop?
Also as has been pointed out even 7.2Mbit/s is mostly marketing lies in order to actually get that you'd have to have utterly optimum radio conditions and be the only connecting terminal and therefore get all 15 downstream channels available to HSDPA. As soon as someone makes a voice call *wham* you lose a channel. Current standards can get as far as 21Mbit/s but the same comments apply. Interim standards before LTE might get to 42Mbit/s
As far as can be told iPhone 3G has a 3.6Mbit/s HSDPA capability which is the commercially sensible thing to do since:
- It takes less power to run the radio
- Even on a 7.2Mbit/s capable network the vast majority of the time you *won't* be under optimum radio conditions and will be connecting at a lower speed
- Even in locales with advanced HSDPA rollouts (UK Voda has had it for at least 2 years) generally 7.2Mbit/s (or faster) service is only available on city centres terminals in sub-urban areas are still only going to be connecting at 3.6Mbit/s or lower.
Apple are selling a product which fulfils a function rather than engaging in pointless specification willy waving. If the are updating the radio to 7.2Mbit/s that will mean that they have got agreement from the telcos to build out 7.2Mbit/s to a point where it is worthwhile having it in the terminal.