samsung
T-Mobile’s Samsung Galaxy S2 may have some display issues
As you can see above, there is a difference between T-Mobile’s Samsung Galaxy S2 and Sprint’s version, with the latter reproducing a brighter, and more vivid white. The complaints in the forums are pointing out issues such as disparities between contrast levels and color reproduction, with odd artifacts such as blobs and lines appearing when the brightness has been set to the max in a dark room setting.
For the less discerning user, this might have totally passed them by without noticing, but for those who are really particular about their displays may want to take a look at this issue first before jumping the gun and making their purchase. For more information on the problem or if you want to add to the list of complaints, head on down to the XDA forums.