In call sound quality

[Ant12345]

Hi had a replacement xz premium phone and people are saying they hear echoes and muffled when I'm talking to them. Tested mic in settings which seems OK any ideas 

[Uliwooly]

@Ant12345

Boot in >>> safe mode and test it, it could be a third party app acting up

[Ant12345]

Thanks tried it was the mic new phone now. Just wondering whether to install anti virus