Is itunes really necessary if you have an Iphone?

I was just wondering because I'm going to try and download ubuntu and since itunes doesn't support this I was wondering if it is really necessary since you can download music and apps and everything else from your phone itself.

Yes unfortunately itunes is needed for Apple mobile devices. You can only download music/videos directly from Apple itunes store, but not through apps or browser that will place them in the music folder on iPhone. There are many programs which you can use to transfer/backup music. But you need iTunes installed on the computer too. I use sharepod to backup or transfer music

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