What has a better screen? PS Vita or an Iphone 4?

Which ones sharper and clearer?

The iPhone 4 because it has a higher pixel density

I've never had either of those things. But I'm just going to imagine the ps vita, since it's made specifically for video games.

Iphone 4 because its awesome and better. :3

If you already have a good phone with HD apps you can buy a ps vita but if you don't it depends on what you like. I would personaly buy a ps vita to play in roadtrips, etc. It would be a little hard to buy games but go ahead. A ps vita is better

Depends
The Iphone has a higher resolution, but the Vita's bigger OLED screen gives better colours and deeper blacks.
So, if you're asking in reference to watching videos or playing games then the Vita's screen is probably better.
If you're asking in reference to reading text then the Iphone is probably better.

Go into a shop and look. You're own eyes are the best judge.

Either way, they are both designed with different things in mind. I wouldn't choose one or the other based solely on the screen.

Iphone 4 has a better screen.

Psvita has better games and the games also have better graphics, if you also like to do other things like internet it looks better on iphone