The phone comes with a 3.5inch screen and with a resolution of 640*960pixels.The phone came with ios4.0 and is upgradeable to ios 7.1.2. The phone is powered with apples a4 chipset and has 512mb ram. Due to optimisation of ios, performance is butter smooth. I played heavy games like fiifa and gta but no issues. The camera in the phone was just awesome. It has 5megapixel rear camera and photos are awesome. The phone feels premium and you can’t expect anything better. The phone has 1420mah battery which lasts a whole day easily. I have used this phone for more than 3 years and I never had issue with this phone. The phone is one of the best iphone apple has manufactured and the screen size doesn’t feels small. I really recommened this phone to others.