In this article, we'll explain how to download YouTube videos to your iPhone so you can watch them offline.
How to Download YouTube Video on iPhone
The easiest way to download and save YouTube videos to your iPhone is to sign up for YouTube Premium. This paid subscription service offers ad-free viewing in addition to video downloads, and is available for $13.99 per month for an individual (or $139.99 per year).
After logging into YouTube with your premium account, find the video you want to download and tap the Download button below the video playback window.
Select the desired video quality (the resolution of the original upload determines the maximum quality) and tap OK.
