With YouTube Premium, streaming is a lot less stressful as you won’t have to deal with annoying ads popping out right when you get to the best part of the videos. YouTube, however, still enforces certain streaming limitations that can affect your viewing and listening experience.

First off, YouTube has ad-free movies — which you get with your subscription and can be accessed on the app by going to You > Your Movies & TV > Free. But they can only be streamed simultaneously on a maximum of two devices. If you’ve subscribed to a family plan, you can watch the movies on a maximum of four devices. As for videos in the music category, the streaming limit is set to only one device at a time, no more, no less. 

In both cases, different hardware (phone, tablet, or computer) and software (browser or app) are considered different devices. So, if you’re trying to stream a movie on Chrome and Edge on the same computer and on the YouTube app on your iPhone, you’re already exceeding the limit. The playback will pause on one of your devices, with an error message saying that the content is being watched elsewhere.