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Call quality issue

When i make calls to some people the call quality is really bad, not to all people.
I had similar problem with my old Xiaomi mi2s, it was a problem with the noise cancelling.
On the Xiaomi there is an option to disable noise cancelling system because sometimes it cuts off or lowers not the noise but the sound you are suppose to hear.
I have not found such an option on the meizu.
Can you guys help me out, how to fix this?

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