The HTC One A9 is many things. Grippy is not one of them.
While you may be fond of carrying your phone au naturel, if you're going to be carrying the HTC One A9 for long, you're going to want to find yourself a case for it. You'll want that case if for nothing else than to try and mitigate just how ridiculously slippery this slim, metal-bodied phone is. I've been carrying the A9 for two months now with a variety of cases, finding what works and what doesn't when it comes to keeping this phone protected and maintaining its functionality, while striving to be — at times — fashionable.
Here are the cases I've tried, and what I think of them. Some are great. Some are not.