A 4 inch screen is the sweet size for a smartphone; you can still use this phone with one hand.

The size is great, it's not too big, not too small and the screen is perfect enough.

The phone size is perfect for someone with smaller hands or wants to be able to use just one hand/thumb to access the whole screen, and the resolution is is great for simple use.

The resolution is HVGA (340x480), and while the screen isn't (by far) rich in details, paired with the digitizer (I think that's the name of the capacitive input piece) it provides a very nice touch feedback.

This cell phone has a very nice screen, with the amoled technology im very happy with it, the dual core processor gives me enough juice to run my apps in a very smooth way, i dont play much so i dont know how to rate it the gaming capabilities.

I'm quite pleased with this cell phone because it has many improvements over version S5830 (ACE), in terms of speed (since it is dual core), ergonomics, screen and graphics, also has more storage memory for applications (rather negative aspect in the ACE version).

buy this phone because I wanted to change blackberry to android and was the best choice for the amount of features it has and the 5 megapixel camera takes high quality photos besides having LED flash.

As ever, the Orange San Francisco makes for a compelling alternative thanks to its larger, higher resolution screen, but the Ace has a nicer design, faster processor and better camera.