Originally Posted by
southlander Q10 has a larger battery and more power efficient screen (Super AMOLED). And the screen is smaller than the Z10 -- another plus on the battery life side.
Z10 uses an LCD screen (which is easy to read in the bright sun by the way). And the Z10 has a smaller battery.
Other than the better battery life on the Q10 it comes down to more screen real estate on the Z10 vs. the great physical keyboard on the Q10.
I will say this though. The Z10 is the very first all touch smart phone I was able to type on comfortably in portrait mode.