The Android Central HTC One M9 review is our collective, in-depth guide to HTC's 2015 flagship, covering everything from hardware to software to camera quality. However with a major Android device like this, it's worth presenting a second opinion.

The HTC One M9 is the latest in a line of highly successful phones for HTC. 2013's M7 and 2014's M8 were among the best Android phones available at the time, and the past two generations of HTC One hardware hold up well to this day.

There were a couple of things about last year's M8 that held me back from using it more, however: The anxiety-inducing slipperiness of the curved metal body, and the generally disappointing Ultrapixel camera.

I've been using the M9 on and off this past month, and for the most part I've found it an enjoyable phone to use — certainly HTC's best to date. However the Taiwanese company hasn't overcome all of the shortcomings of its previous flagships. And with Samsung finally upping its game in a few important areas, not to mention the prospect of another strong LG flagship on the horizon, the M9 could have its work cut out.

With that in mind, let's take another look at HTC's 2015 flagship.