Nice blue light filter. Great for night time DQuesting and gaming overall and health for eyes. There is a way to remove the filter in these photos and how I did it on all photos i had with that filter (presumably from Twilight App) was edit on Pixlr app and press autocorrect. The same method i used to combine the gears and make one build in one photo rather than 6 or 8 seperate photos.
EDIT: I use CF.Lumen blue light filter, similar to F.Lux PC app where the filter is there but it feels more natural rather than filtery to the screen, almost like changing the RGB colours of monitor but thats a root blue light filter. Also if stock android, using the blue, red, green sliders with androids native night and day modes. @Phreak