I have an owned the iPhone 5S since the release of it, and lets just say it has been everywhere with me, almost through hell and back! haha But I would say this is a very very wonderful phone, especially for the pricing right now, the iPhone on the contracting companies have now dropped to minimum$70 instead of$85, and most are$0 on a 2 year term.
Still is running on the newest iOS, and plans for it is that it continues all the way into iOS 10 apparently, which would be awesome.
I haven’t had any problems except it slowing down a tiny bit, but once I cleared up my memory on the phone it booted right back up too speed!
And now with Apple’s move to iOS its never been easier to switch from Android to Apple! Trust me, I’ve been everywhere with my iPhone and she is tough as hell! haha I own all Apple products and use them for my photography business, music and such and I am one happy long time customer now!