blackberry or not

I'm thinking of getting a blackberry phone, for the new school year to make it better and to have some fun during doing my tons of homework which I'm sure I'll have. I want it especially because it has an app which able to make ppts and word docs and other stuff. But from this view a laptop is better. But also more expensive. But sooner or later I'll need a laptop for school things, though I have one which is ancient.i don't know at all what I actually need and want. Ok I want a new phone, I have a really old one now, and have another but that doesn't working for some reasons.
To have a blackberry it would be good because; the internet access, writing on it homework, research for classes,writing blogs(not so important but good),calendar,organizer! but it has a small screen, the whole device is small not as comfortable as a laptop. But easier to carry, doesn't need an other bag.
Laptop: i don't want a laptop actually, ok it's more practical but I don't know.
I'll think it over and over, and then at the end everything will be good and if it's not good it means it's not the end yet! (from the movie The best exotic marigold hotel)