Model name: ZS600KL
Firmware version: WW-16.0420.2009.39
Rooted or not: Rooted, before not rooted had the same issue
Still not fixed the problem with these gamer phones. The recorder sound quality is great but when you make phone calls the other person can't hear you well.
I see people are complaining also with the same problem at RoG Phone 5.
Why is that the company doesn't fix the problem?