Call quality on Asus Zenfone 6z (Zenfone 6)

[mihirpmehta]

When I receive call from my Asus Zenfone 6z I am constantly hearing noise and distorted voice anyone facing the same issue ?

[debashiss04]

I am having sane issue. Want to return. Completely dissatisfied with this product

[Vitthal]

I am having same issue.

[pkhammu2005]

Dont keep earpiece volume at full, keep 1/2 levels below max & its ok but nothing great. They seem to havr got carried away by flip camera & screwed the earpiece quality. 

[faisal7344]

Call quality throught earpiece is worst than I have experience in any of smartphone yet
Please correct it as soon as possible or else I might need to switch to any other smartphone