Recently the volume has become so low during calls that I can hardly hear . I have made sure the phone apps are up to date and there is no other device/speaker attached. I understand this may have happened during samsung upgrade? Can someone please advise me how to fix. Thanks
have you tried it in safe mode?
is the speaker loud enough when you play music or videos?
submit an error report on members app > + button > error report if you think it's a software issue or take it to the nearest service center (ubreakifix or samsung care store) for a hardware issue