The dual-SIM sibling to the Samsung Galaxy S IV (http://www.gsmarena.com/samsung_i9500_galaxy_s_iv-5125.php) has been subjected to rampant testing (http://www.gsmarena.com/samsung_galaxy_s4_review_surfaces_ahead_of_announcement-news-5700.php) in China. This time around we get a close look at the screen on the latest Samsung flagship and see hot it compares to the Reality display on the Sony Xperia Z (http://www.gsmarena.com/sony_xperia_z-5204.php) and the Super AMOLED on the Samsung Galaxy S III (http://www.gsmarena.comp%20/samsung_i9300_galaxy_s_iii-4238.php).
The 4.99" 1920 x 1080 Super AMOLED screen on the upcoming Galaxy S IV looks to feature not only a bumped resolution but also some new tech on-board. The image below demonstrates the black level of the screen compared to the Xperia Z and Galaxy S III. The image (which was shot in close to perfectly dark room if we understand the translation correctly) was shot with a DSLR at a 15 second exposure.
Galaxy S IV compared to S III and Xperia Z
The Samsung Galaxy S IV was also confirmed to have a PenTile matrix screen, although we doubt it will matter at this kind of pixel density. Samsung has gone for a completely new arrangement this time where the green sub-pixels are twice as many as the blue and red ones. More impressively, the Galaxy S IV display features very minimal gaps between the pixels - probably the smallest of any screen so far. We also got to see some grayscale and gamma charts, which hint that the Galaxy S IV has colors that are punchier than those of its predecessor.
Pixel arrangement, grayscale and color transition
Then we come down to pixel level thanks to a microscope. The Galaxy S III handles fine text the worst, although the Xperia Z has a slight advantage at this zoom level. The Galaxy S IV is close enough though, so it probably won't matter in real life.
The screen under a microscope
Finally we come to the screens compared in a dark room. The photos are of really low resolution sadly but will still give you a basic idea of what each screen can bring to the table. The Galaxy S IV is clearly the most pleasant screen out of the bunch.
Xperia Z