In a review of a phone, you review the camera, the storage, the battery, the display, everything get reviewed but one thing is NOT reviewed: the SOUND QUALITY.
I have a hearing impairment and for me, sound reproduction quality is of utmost importance. To me I will buy a phone not for the above extras but for the ability to hear clearly the person who is speaking.
Why can't reviewers address this point? Are they so deaf as not to hear the pleas of the nearly deaf?
Honestly, at least to me, call quality is roughly the same across every phone (maybe with small changes in maximum volume) so I don't bother spending time talking about it. Similar situation to audio quality from the 3.5mm headphone jack; most phones are 'good enough' and I can rarely tell the difference between top-end devices.
There's also the issue of audio quality being largely subjective, so often the best way to test it is through side-by-side comparisons. Often I don't have every phone available for a side-by-side comparison.