For 510 hours, a Korean website tested the OLED screens on the Apple iPhone X, Samsung Galaxy Note 8, and the Samsung Galaxy S7 edge. Letting a static image linger on the phones, the test measured how long it would take to produce a noticeable burn-in image on each of the models. It took 17 hours for an image to burn-in on the iPhone X’s 5.8-inch panel. But that image could really not be seen during normal use.
Out of the three devices, the iPhone X took the longest to create a distracting burn-in image. While it took longer for such an image to initially aqppear on the Samsung Galaxy …