IF the display resolution of the Harmattan device is to be correct 854x480 pixels, FWVGA. That means it will pack 179520 more pixels than Symbian 640x360 device displays. To say that the N8, C7 Active-Matrix OLED displays have something like a pixel density of 209 Pixels Per Inch, they are nice looking.

The samsung galaxy wasn't that far ahead either with 233 Pixels Per Inch. But IP4 has 326 Pixels Per Inch. Not that you need anything over the 209 PPI on Nokias phone to be able to physically see a difference with the human eye anyway. However some might perceive a slight difference in edge definition bouncing out at you.

As long as contrast is excellent, good black & whites & there should be a nice experience on harmattan 4.0" display. Supreme OLED. If it gets large battery & very lowe power consumption SoC + OLED + power efficient Linux = Good average battery life. Considering BT4.0 also save much more power than BT3.0 & so does BT3.0 save more power than BT2.1!!