Here’s a step
by step by tutorial to download YouTube Videos in iOS 10.3.1 without
jailbreak on iPhone/iPad. Downloading YouTube videos on iPhone in iOS
10.3.1 is not easy as Apple does not have features to do this and YouTube
itself doesn’t allows too.
But if your
device is jailbroken, then you can easily download any YouTube videos
 from iPhone with these cydia tweak called Cercube, Youtube++ etc which
supports iOS 10, 9, 8 or below.
How to
download YouTube Videos in iOS 10.3.1 without jailbreak
Since there is
no jailbreak for iOS 10.3.1, 10.3 and 10.2.1, so all above jailbreak tweaks
will not work. SO is there any method or option to download YouTube videos on
iOS 10.3.1 without jailbreak? Because many of iOS users have already download
and updated their devices to iOS 10.3.1. Want to download favorite YouTube
Video without jailbreak in iOS 10.3.1?
Here's a step by step by tutorial to download YouTube Videos on iOS 10.3.1 without jailbreak on iPhone/iPad. Downloading YouTube videos in iOS 10.3.1
YouTube App
on iOS has a big limitation but you can now download YouTube videos
without jailbreak on iOS 10.3.1,10.3,10.2.1 or below in any iPhone/iPad with an
app called “Browser and File Manager for Documents”. Browser and File
Manager for Documents is compatible with iOS 8.1 or later.
Also See:
How to
download YouTube Videos without jailbreak
With this
Downloads app (Browser and File Manager for Document),  you can download
and browse any files on your iPhone, iPod or iPad like on your computer without
any limits.
Browser and
File Manager for Documents
is a Full-featured Download Manager for iPhone
running iOS 10.3.1 or below without jailbreak. In addition, you can also auto-correct
file name, fast speed, safe pause, resume downloads with Background mode
support and many more features. Similarly you can download videos, music, doc,
xls, pdf, html etc on your iPhone without jailbreak with this download app.
How to download
Downloads app (Browser and File Manager for Document)
** Go to AppStore
> Search Downloads 
** You will see a
blue colored Downloads app which actually name as (Browser and File
Manager for Document).
** Get it and
will download on your Homescreen
** Launch Downloads
app (Browser and File Manager for Document)

** You can find
four tabs like Browser, Downloads, Files and More as you can see in the
screenshot;
Here's a step by step by tutorial to download YouTube Videos on iOS 10.3.1 without jailbreak on iPhone/iPad. Downloading YouTube videos in iOS 10.3.1
** Now browse any
YouTube videos you like to download from the link www.youtube.com

** When video
plays, it will automatically pops up to download or close option.
** Tap on
download to start downloading YouTube videos or any other document files, music
directly on your iPhone-iPad.
** After you have
download, your files are saved in the Files section.

Also See:
That’s it. You
have successfully downloaded YouTube videos on iOS 10.3.1, 10.3, 10.2.1 or
below without jailbreak on iPhone/iPad.
Downloads app (Browser and File Manager for Document) is available for free in the AppStore and is compatible with iOS 8 or later.