Both moderators above have made sensible replies, Ragnarokx and Adrynalyne. To be able to get quick incremental OS updates is indeed an advantage, and Samsung does have a lousy track record, as others have also noted. (and yes, I did mean 2012 ? thanks). I still contend that the issue on specifications between the nexus in the most recent SGS2 offerings does boil down to the screen and personal aesthetic preferences,otherwise it goes to the SGS2 skyrocket.
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Regarding OS -- we are in a new ballgame All fanboy devotion aside.
The picture is bigger than just these phones we are talking about. The issue actually involves money, and power (Yes, as usual). Samsung is now really in bed with Google, obviously not to the extent that Motorola is. But the business world is polygamous and based on money not morals. Samsung is bigger than Motorola, and will never be bought by Google. But, they sell more phones, and more tablets.
So what's the big difference this time? Pressure from Google which becomes more powerful with each passing moment - literally. It is Google's drive for world dominance in operating system usage, affecting both the tablet industry in the phone industry tremendously. Even though this year, they achieved numeric dominance, Android's main problem was two platforms and schizophrenic software development for programmers. Ice cream sandwich not only solves that issue, but holds tremendous promise for the future. Google has objectives that Samsung agreed to comply with, and so has every other cell phone manufacturer. That objective includes ice cream sandwich running on every android device that has powerful enough hardware to make it look decent. More precisely, the objective is to update all such android phones within six months or less, and require new capable devices to carry it. Incremental updates to ICS ARE another thing, so point well taken.
Carriers are the biggest obstacle for both manufacturers and Google, the latter of which is now making efforts to compete with them.
The Android OS is far superior to iCaveOS which it is now copying in iOS5. Tables have already turned. Nevertheless the actual Android software-base is currently fragmented.
Back to the phones ? when you compare these phones you can safely figure ICS on the SGS2, and the Galaxy Note within first quarter of 2012. No need to cry about Samsung's bad track record. That will not be an issue. True, Samsung has been less than hospitable to its consumers, and it is because all they care about is money. They already got your money when you bought the phone. But now they have to contend with Google on these recent releases, and Google is not messing around. The issue is not just these phones.
To be honest, we have to admit that Samsung cut corners on the Nexus. It is still an awesome phone, and I love it, but they were stupid for not putting removable SD cards, a faster processor (re Galaxy Note at 1.4), DLNA, a better battery, and gorilla glass. All of these technologies were available, but not employed.