It's not really that definitive to compare the mentioned as it's not really on the same level. Having said that, it's "fairer" to compare the iPhone5 with Galaxy S II or Galaxy Note.

I was torn apart from Samsung's Galaxy S II and Apple's iPhone4 (since iPhone5 is still in the horizon) but when it comes to technicality and functions, there's a vast differences.

Build: I must say iPhone4 due to the industrial design of glass and metal. The Galaxy S II has glass and the only drawback it suffers is the flimsy, thin back cover which is made of plastic. Personally, glass and metal is hard to resist and I must say iPhone4 is the winner. However, the Galaxy S II is more anorexic than the iPhone4.

Screen: HELL YEAH! This is utmost important as you'll be looking at the screen whenever you take out your mobile. Enough said. You want your eyes to be mesmerised by colour like those M&M candies, take the Galaxy S II. It sure looks bright and awesome! The iPhone4 has more pixel per inch but the colour is a little "natural" and you get a small packet of Tic-tacs instead. Depends on personal preference. I, myself, would say Galaxy S II is the winner but then again, that's just me.

Oh, Galaxy S II gives you a bigger screen. 4.3" of bright, coloured wonders.

Processor: Samsung's 1.2GHz dual-core Qualcomm processor takes home the crown. Nothing much to be added.

Camera: Forget about Facetime. 8 Megapixel versus 5 Megapixel. Galaxy S II has one hell of a functionalities when it comes to camera. LED flash is not much in reality but it's an added value, nevertheless.

It's September right now and inevitably the iPhone4's successor will come when the time comes. The question is, are you willing to wait? Time and tide waits for no one and when the time comes, it would be iPhone5 versus Galaxy Note.

When it happens, it'll be back to square one and you'll be creating another thread in similarities to this one and that's where the whole wide world will be on a déjà vu experience like in the past, present and future.

This post has been edited by Joey Christensen: Sep 24 2011, 02:41 PM

Well said. May I add a little here?

1. The resolution of the retina is in angular measure - it's 50 Cycles Per Degree. A cycle is a line pair, which is two pixels, so the angular resolution of the eye is 0.6 arc minutes per pixel.

2. So, if you hold an iPhone at the typical 12 inches from your eyes that works out to 477 pixels per inch. At 8 inches it's 716 ppi. You have to hold it out 18 inches before it falls to 318 ppi.

So the iPhone has significantly lower resolution than the retina. It actually needs a resolution significantly higher than the retina in order to deliver an image that appears perfect to the retina.

Source: http://displaymate.com/

Thank you for the correction.