iPhone 5s features an A7 chip with 64-bit architecture, a Touch ID fingerprint identity sensor, an even more impressive iSight camera with a larger 8MP sensor, an ultrafast LTE wireless, iOS 7, a 4-inch (diagonal) Retina display and uses Nano-SIM. It is available in silver, gold, and space gray.
On the other hand, iPhone 4s features an A5 chip, an 8MP iSight camera, and Siri, the intelligent assistant you control with your voice. It has a 3.5-inch (diagonal) Retina display and uses Micro-SIM. It is only available in two colors, which is black and white.
Every new iPhone comes with better-than-ever versions of iPhoto, iMovie, GarageBand, Pages, Numbers and Keynote. You may visit Apple's website for the detailed comparison of iPhone 5s and 4s specs.
Just In! The rumored iPhone 6 release date is now backed to June 2014. According to Tech Radar, the next iPhone 6 is expected to be launched at the Worldwide Developers' Conference alongside iOS 8. Moreover, a phablet with larger screen is also expected to be released at the tech event in June 2014. Check out more at International Business Times.