device doesn’t allow you to download songs and videos from youtube. But luckily there is a
tweak called ‘Cercube 2’ which allows you to download HD videos and songs. You
can save the video to camera roll or import it as a song to your music library.
It also enables background playback ie; you can
quit the application while playing your favourite music and still have the
audio playing in the background. And also blocks ads which may be really annoying
Step 1 Open cydia—Sources—Add a repo http://repo.hackyouriphone.org/
& select the quality of video. You can also download as mp3 only.
your device isn’t yet jailbroken then here’s How to Jailbreak your iPhone, iPad & iPad Touch