https://www.theverge.com/2017/11/4/16605144/pixel-2-xl-screen-oled-color-shift-issues-ping-counterping

Ping / Counterping is a special feature where editors of The Verge debate issues from the world of technology head-to-head, no holds barred. Vlad Savov and Dieter Bohn are bringing it back after a very long hiatus to debate whether the screen on the Pixel 2 XL is a deal breaker.

I reviewed the Pixel 2 and Pixel 2 XL a couple of weeks ago. After that review was published, we discovered that the 2 XL exhibits more image retention than you'd expect on a flagship (or really any) phone, especially one so early in its lifecycle. Google quickly moved to address the issue as best it could, saying it's confident there's no real burn-in, but also promising software updates to mitigate against it going forward. The company is also extending the warranty to two years.