We have been hearing quite a lot about the iPhone 6 increased screen size. Looking at a comparison of the screen size between an iPhone and its other counterparts, clearly says the increase of the screen size is proportional to the thickness of the iPhone.
While comparing the iPhone with a Moto X and LG G2 mini shows both the phone have the same rumored screen size of iPhone 6 (4.7 inches). But the phones are smaller in size than the iPhone 6, which is largely due to the rounded Touch ID sensor on the bottom.
Now a comparison between an iPhone with 5” nexus 5 and 5.2”LG G2, we observe the two phones shave the same height like that of an iPhone. Finally a comparison of the iPhone with the new HTC and Galaxy S5. These two phones have less similarity with the iPhone as the screen sizes are much larger.
After a sincere learning about the comparison of screen sizes, we know the rumored sizes are 4.7” and 5.5”, though 4.7” has a higher probability of being rolled out since Apple is facing a tough time thinning the battery.