PROS-
1.Great design with an optimum screen size of 4inch.
2.Fair battery life.
3.Good camera quality with a unique feature of slowmotion video shooting.
4.Finger print detector.
5.99 out of 100times it does not hangs, no matter how heavy applications are open.
6.Siri feature is awesome.
7.Unlike iphone 4 or 4s, it supports new ios version of 9.2.
8.Although iphone 6 and iphone 6s are available in the market, still I would recommend iphone 5s becoze of its easy handling and traditional iphone look.
CONS-
1.Home button may become rough to use after some time as of my phone.
2.Like all other iphone, it is very time consuming and hasty task to share things like songs, video etc. if other device is not an apple device.
3.This phone takes very much time to get start again ones it gets full out of battery.
OVERALL IMPRESSION
iphone 5s is worth to buy and it is now available at very low price due to the presence of its higher versions( iphone 6 and iphone 6s) . I bought this phone in May 2015 and I am very satisfied with its performance.