Is there much point in buying an iPhone if I have an iPad?

I'm getting an upgrade on my mobile contract soon and I've wanted to get an iPhone, but now I have an iPad. It seems that the iPhone and iPad are quite similar so I was just wondering if there's much point in getting the iPhone as I don't want to waste money, really. Also if the BlackBerry Z10 would be any good, but I know how annoying BlackBerrys are…

No seriously I have an iPad and iPhone and believe me it's great.iCloud and everything between them to is fantastic! I would defintley get an iPhone aswell!