My all time favourite in retrospect. I regretted upgrading to the 6s+ and selling my 5S to fund it. From a piece of fine jewelry to the ugliest iPhone ever made (6-8 series). Pay and the desire to try a bigger iPhone were the reasons. I missed it dearly soon after and at the very least, I am glad the boxy square design returned with the 12 and up. The 5s was so light and easy to use, and TouchID made it futuristic. First iPhone I went case-less with and just used a sleeve from time to time. Damn time flies!