May 17, · As an added benefit downloading YouTube videos lets you watch without draining your data plan or relying on your potentially crowded home Wi Author: Adam Speight. Aug 23, · Watching a YouTube video typically requires an Internet connection, but with a little preparation the videos can be saved for later offline slicelive.com: Nick Barber. Mar 22, · Basically, there are three ways to watch YouTube videos offline on your iPhone. 1. YouTube now provides Offline feature. You can use it. This feature, however, has some shortages. You can only watch the offline videos on YouTube with 48 hours, and.