You’ll all agree when we say that Apple iPhone 5s is, or WAS a great smartphone. iPhones were always debatable in terms of features and their lack of microSD slot, which is, unfortunately, the case here. At least, we have a 3.5mm jack, which is absent in the newer versions of iPhone. Apple iPhone 5s is an old smartphone, thus having Dual-core 1.3 GHz Cyclone (ARM v8-based) CPU and PowerVR G6430 (quad-core graphics) GPU. We must admit that these two perform very well even for today’s standards, even though Apple iPhone 5s has 1 GB of DDR3 RAM.
Now, when it comes to a display, it’s LED-backlit IPS LCD display a little under HD resolution of 640×1136 pixels. But because the phone has only 4″ screen, this resolution is sharp enough here and looks good. Apple iPhone 5s has a Li-Po 1560 mAh battery. On the paper, this may sound bad, but in reality, it’s really good.
I bought iPhone 5s a little to late… last year. It still works well but i can't get over its 4" screen, although it's a great and sharp screen. Performance-wise, i can't tell you any bad words for it. It works great and plays some of the most demanding games out there. It's better to buy it used.