I have used my Nexus S for 3 days...Some doubts and some feedback here..
In comparison to the other 2 devices that I have ( Galaxy S, Nexus One).
Nexus S weakness
1) Wifi reception is worst off compare to both Galaxy S and Nexus One..All connecting to the same Wifi point at the same location. Nexus showed highest reception level..Nexus S getting lowest.
I dont know is it this due Signal level mapping to Display status problem or what..So far, i dont find functioning issue..just the display level is always 1bar less compare to the other 2 phones(Nexus One & Galaxy S)
2) GPS
Before I purchased the Nexus S, I have been worrying on Samsung GPS problem that plagued Galaxy S.
Locking speed, nothing match Nexus One...Nexus S took 2-3 minutes just to lock ,i have yet to run GPS road driving test..however i did see the GPS losing lock within 2-3 minutes of sticking out the phone out of window to test.
I really hoped that the performance is better than Galaxy S and i really doubt it will perform as good as Nexus One which has almost instant lock...
I view GPS locking speed is important feature,as I like to take photo with geo tagging to make as evident of location..with slow GPS locking speed..this makes photo taking with geo tagging impractical.
3. Video Playback
Galaxy S- Still the best.
Nexus S - the stock Video player has some bug..somehow produce choppy(playing local file got the same problem,not internet speed problem) playback on .mp4 file, i hope this is just bug that Google will fix it
Did you guys observe the same thing ?
Nexus One- audio suck but overall video smoothness and color tone is good..it is not as bright but appear naturally.
4.Overall Smoothness
Nexus S is the clear winner , Nexus One => good, Galaxy S=> trade mark sudden lag problem
In summary, very worry on Samsung imperfection on the GPS problem and weak wifi ...I dont get the same excitement on out of box on Nexus One..the improvement is very little..