C5 ultra voice not heard on the other part

[Prince79]

C5 ultra is having call quality issues, most People complain they cannot hear my VOİCE.WHAT do You think is the problem?

[Uliwooly]

@Prince79

Test the device in >>> safe mode

[#3]

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@Prince79 wrote:
C5 ultra is having call quality issues, most People complain they cannot hear my VOİCE.WHAT do You think is the problem?

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Do what siad to do Uliwooly, also test with Diagnostic (Settings - Scroll Down to About Phone - Diagnostic)