In-call mic volume is too low/distorted unless you speak very close to the phone. If phone is tilted, other person can hear only a robotic sound coming from space. However, internet calling apps (WhatsApp, FB Messenger, IMO etc.) works quite normal. Voice Recorder and Camera recordings are also quite acceptable.
I have tried many ROMs, same problem on all. If devs may please help to resolve the issue, it would be a great service to humanity
Updated link: http://en.miui.com/thread-673226-1-1.html
ROMs, Mods, Discussion and all other Topics about the Xiaomi RedMi Note 4 (nikel) and RedMi Note 4 X Qualcomm (mido).
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