+ Very large, high resolution display
+ Longer battery life than the S2 and still faster
+ While I watch videos you can write SMS etc.
+ Intelligent control by certain movements
+ Eyes detection to prevent dimming of the display
+ Clearer settings
So I would recommend this phone to anyone who spends a lot of time with his smartphone.
For those who previously had the S2, the purchase is worthwhile only if one is really very handy excited;)