S21 Ultra speaker crackling

[Daviek28]

The top speaker on my phone has started to randomly crackle sometimes it's fine then later it will crackle.  I can't think if this started just after an update anyone else having this problem?

[AndrewL]

@Daviek28: To gain a better understanding of the issue, please can you confirm what app or feature you're using when the speaker crackles? In the meantime, please head to the Samsung Members app > Get Help > Diagnostics > Speaker, and follow the on screen instructions. Does this return any 'Action required' notifications following the tests? 

[Daviek28]

It could be any app , music player , Facebook, YouTube, even the phone ringing. I could play a song Sweet Jane by Cowboy Junikes for instance and the sound front speaker at top of screen crackles like it's either too loud or the speaker is damaged , 2 minutes later I could play the same song and the sound is fine .

[Daviek28]

Also the test says normal