Should I get an Ipad or an Iphone upgrade?

My birthday is coming up and my dad said if i wanted an Ipad he would pay half but I have a Iphone upgrade avalible and it is about the same as half an Ipad. I have a 3GS and its old, Very old but I really want an Ipad. I don't know which i want more! What would be a better option? Please help? I really want both but i don't know which i would rather have.

Iphone. Ipad don't work as good and you can't make calls off of em. And r u relly going to carry around an huge ipad all day

Toys, buy a real computer. I see the word "want" in there. Key there, stop, save ya money, buy something you "need" when the time arises.