But given the fact that all major hardware vendors announced 1920x1200 displays with 226 ppi (instead of 264 ppi on iPad3) I guess, this difference is negligible.
The fact that the Whopper sells, doesn't say anything about its quality but about the quality of the buyers. Wow - being an Apple user for a decade I never thought I would come to the point where I state that an Apple product is "the Whopper" while others offer quality.
There's a significant difference between 264 ppi and 226 ppi. Some Android manufacturers also cut corners by using a pentile display matrix.
Also, there's a difference between technical specifications and quality. The iPhone and iPad set the bar in terms of build quality (as does most of the Mac line). Apple uses expensive components, and doesn't like to use cheap materials the way many Android manufacturers do.
Apple has made a choice up to now not to include LTE radios in any of their devices, likely because they have concluded that the current chipsets aren't worth the tradeoffs. In the case of the new iPad, they have evidently changed that view, but only to a point. They clearly want to market faster wireless, and in doing so they added DC-HSDPA and faster HSPA+ support than what was in the iPad 2. That would do no good whatsoever in the US because Verizon doesn't use HSPA+ at all (their 3G is CDMA EVDO) and I believe AT&T tops out at HSPA+ 14.4. So Apple made the logical move by adding LTE for the US market, which offers about the same speeds as HSPA+ and DC-HSDPA offer you in Europe.
That doesn't mean the iPad is of lesser "quality" than Android devices that offer LTE any more than a BMW with a 6-cylinder engine is any less of a "quality" car than a Chevy with an 8-cylinder. It just doesn't offer the same technology.
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So now you arrived at LTE-style-argumentation: Nah, Apple dos nothing wrong. Just look how much they sell (nevertheless they are still blatantly lying on the Apple webpage and stating 4G capability in Germany).
According to the ITU, HSPA+ and DC-HSDPA are 4G. Even LTE didn't meet the original standard, so they changed it.
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It all need a lot more time and whoever wants to buy the new iPad solely because of LTE should forget it. But then, there is no alternative at the moment.
You hit the nail on the head. Those who want the new iPad solely for LTE will be disappointed unless they live in North America. However, there are a lot of reasons to want the new iPad other than LTE. Even the rumor mills listed LTE only as a "possibility" the day before (while the Retina Display was a given). It was certainly given a higher probability than the haptic feedback and 7.85" iPad rumors, but nonetheless a lot of the "experts" were prepared for Apple to stick with 3G-only for one more generation (given that the 28nm Qualcomm chipsets are only now starting to go into production).
Heck, the iPad 2 topped out at HSPA+ 7.2. The new model is a vast improvement even without LTE.
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A common misconception brought about by a Jobs' verbal mistake long ago, is that A-GPS involves cell towers. No. He was trying to cover up the lack of GPS in the first iPhone model and confused a lot of people.
Yes, the original iPhone used cellular triangulation as the sole source of location data. The GPS models now use cellular triangulation in addition to normal GPS. That's what A-GPS is.