Here’s a very simple and suddenly very easy solution on how to fix sound issues on Xiaomi Redmi 4, Redmi 4 Prime / Pro phones.

Reduce noise and fix sound on Redmi 4 Pro during a call

The solution is very simple: try to disable pop-up notifications during a calls.

  1. Go to the “Settings”.
  2. Then “Notifications”.
  3. “Application notifications”.
  4. Open “Phone”.
  5. Disable pop-up notifications.

The irritating sound should be gone now!