Here's how you make your Galaxy Note 4's display usable in direct sunlight

We usually like to have control, but in this case Auto Brightness is the key

It's no secret that Samsung made some serious steps forward in display technology with the Galaxy Note 4, boosting resolution, colors and brightness to the highest levels we've seen from one of its phones. The 5.7-inch QHD display is quite gorgeous in any setting, and the bevy of display modes in the settings helps you tune it to you liking. But the most mundane of settings, Auto Brightness, is one that you want to have checked if you plan on using your phone out in the sun.

source: androidcentral