you obviously didn't fully review this phone
About the rear buttons. How is it not obvious why the buttons are placed in the rear? It was done to allow for that ultra thin bezel around the screen. This should be more apparent when looking at the nexus 5 which does have side buttons. It has a thicker bezel and smaller screen as a result.
There are only a few of things wrong with this phone, most of which are the carrier's fault:
The gloss back
Inconsistency of rear buttons depending on carrier model
Limited case options
Pre-installed software and some bloatware
Unforgivable, worst ever default notification sounds (boys choir)
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