If you stream video on your OnePlus 5 or 5T, you might notice that the videos from Netflix or Amazon Prime Video aren’t as crisp as you’d like them to be. Unfortunately, these two devices can’t stream Netflix and Amazon Prime Video shows and movies in high-definition at the moment. These phones currently support Widevine Level 3 DRM instead of Widevine Level 1 required to cover HD streams. This means, you’re only able to stream in standard resolution at the moment. A spokesperson for OnePlus has assured its users though that they plan to enable Widevine Level 1 support through a future update. A timeframe hasn’t been given though over when this update will land.
Source: The Verge