The more things change, the more they stay the same. In 2016 you voted that the best screen size is between 5" and 5.3", in 2017 the most preferred screen diagonal is still centered on 5.2". 41% of the vote settled on that option, though this year the larger option - 5.5" - came close with 28%. Things are starting to sway towards bigger screen, though this poll gives us a feeling that it will be a while before the 5-and-a-bit inch phones lose the top spot. One thing that may accelerate the shift is wide-angle screens. The 5.7" (wide aspect ratio)' option scored a respectable 16% of the...
Source: http://www.gsmarena.com/weekly_poll_results_52_screens_still_most_popular_interestinwidescreens_raises_quickly-news-25115.php