The Sony Xperia Z3 was found to have a much ‘colder’ display when compared to its predecessor, the Xperia Z2. If you compare them side-by-side you will notice that the Xperia Z3 has what looks like a blue tone to it. Judging by the pictures below, it looks like the Xperia Z3+ will be closer to the Xperia Z2 in terms of tone.
According to Sony, the Xperia Z3+ has a screen that is 16% brighter than the Xperia Z3 and it shows in the comparison pics. The second picture showing a head-on shot of the Google home page shows off the fact that the Xperia Z3+ has a warmer screen too. Obviously unless you are comparing side-by-side you may probably not notice the difference, but it’s good to see Sony improve the Z3+ display over the Z3.
Xperia Z3+ display (right) compared to Xperia Z3 (left)