With that in mind, I retired my old Samsung smart phone in favor of a refurbished iPhone 5S running the newest Apple iOS (10.3.1 at the time of this post).
To keep this phone well-protected I turned to Amazon. I found the "O-Case" in brown leather. It has a classy look and feel to it. The leather is luxurious and the stitching shows great attention to detail. In short, I love the way it looks and feels.

There is a lot of cheap leather out there. Just like shoes, you can find junk, like Nubuck, and you can find patent leather that will serve you for many years. This case is the latter, not the former.

As for the case, I love an elegant look, a luxurious feel, and adequate protection for the phone. I also want it to fit comfortably in my shirt pocket or in a sport coat or jacket. I don't need a pen holder or flaps to make it stand up for watching movies. I can watch movies on one of my tablets if I choose to do so. This is, after all, a telephone as far as I am concerned.
If you want a practical phone, consider the iPhone 5S. There are lots of refurbished units available. If you want a top-quality, executive leather phone case, check out the O-Case at Amazon.