For the last couple of weeks we've been trying to determine the best place for the selfie camera - on a slider, through a hole in the screen, or on a plain old bezel - there are plenty of options. But what if we solve the problem by removing the selfie camera altogether? After all, the only reason it is needed is that you can't frame the shot with the rear camera as there's no viewfinder. We already know that a second screen works well as a viewfinder. The Meizu Pro 7 showed that even a tiny screen on the back is good enough to shoot selfies with the rear camera (it had a narrow 2" AMOLED...
Source: https://www.gsmarena.com/weekly_poll_are_dual_screens_the_way_forward_or_unnecessary_increase_in_cost-news-34490.php
