So I recently got a Iphone from craigslist, and I want to put all my music on it, but I have one problem. It won't let me because there is a app on it that apparently the guy before me was downloading but changed his mind. I want to delete it but when I try on the Iphone, it won't let me because there is no x on the right hand side of it. I was wondering if I should reset all settings, but I don't want to ruin it, since I payed quite a lot of money for it, but it's pretty much useless since the I can't add any apps or music on it. I just don't know what to do.