1

in the starting call record good but after 30 seconds some time my voice gets weak some times callers voice get weak.

i tried all the setting mention in forum.

please resolve my probelem

2

Moto G5 Plus doesn't have this problem.
Moto G5S Plus does have this problem.
Your phone is not Moto G5 Plus, instead it's Moto G5S Plus, is it? See here: https://www.boldbeast.com/forum/topic15 … o-g5s.html