iPhone

Model	picture	Initial release operating system	Highest supported operating system
iPhone (1st generation)		iPhone OS 1.0	iPhone OS 3.1.3
iPhone 3G		iPhone OS 2.0	iPhone OS 2.0
iPhone 3GS		iPhone OS 3.0	iOS 6.1.3
iPhone 4		iOS 4.0 (GSM) iOS 4.2.5 (CDMA)	iOS 7.0.4
iPhone 4S		iOS 5.0	iOS 7.0.4
iPhone 5		iOS 6.0	iOS 7.0.4
iPhone 5CiPhone 5C		iOS 7.0	iOS 7.0.4
iPhone 5SiPhone 5S		iOS 7.0	iOS 7.0.4