anything you purchased is in itunes or the iPhone and can be retrieved. even if it was something removed from the store. this happens a lot. i don't understand what the guy says about AOL. i guess i do not go back that far. my earliest purchase was in 2007
on itunes, you need to go to the itunes store home screen. it might ask you for your username and password. as long as you know your username and password you can get your stuff back
you go to the store home screen and to the right you see purchases. when you click on that you can click on "not in my library" and under that, you can see tv shows, movies, music and apps, etc
anything there, even deleted stuff from the store, like Ultimate Warrior's soundboard or "Dr Danger" starring Bob Arnot can be downloaded again
i got a list of stuff that i was able to retrieve on my iPhone when other people said it was impossible
a lot of people say that can't get anything back that apple deletes from its itunes and app stores, unless you retrieve it from iTunes, and that is just 100 % myth. that is no longer true as far as i can tell
please don't misunderstand what i am saying. please don't take it the wrong way and think i am saying we no longer have to back up our stuff to itunes or iCloud
however i have heard that books are one thing that apple may not allow you to download again. so always back up books
here is a cool screen capture of my iPhone 6+ running apple's "iPhone 4 Case program". i was able to retrieve this without itunes. just like everything else that has ever been removed from the store. as long as an item is purchased it is yours forever. apple can get all bent out of shape over Videolan player , or a tethering feature in a flash light app, but if you bought it, it is yours and apple doesn't take it away
i guess they took their server down so i can't get a bumper case for my iPhone 6 plus