S21 Ultra Speaker Issue

[Snortyblog]

Hello All, I've recently (and suddenly) had both my earpiece speaker and loudspeaker develop a horrendous crackle on my phone. A lot of forums suggest pressure changes being the issue, so to remove the sim card tray, but this does not help. However, if I put my mouth round the sim tray opening and apply a minute amount of air pressure, the crackling and distortion stops. This resumes as soo as I remove my mouth again. 

Do I need new speakers? Or is there a way for me to seal pressure within the phone? 😅 

Any insight would be greatly appreciated. 

[VTraised]

A little late but I just randomly developed a similar issue, the top speaker would crackle at high volume. I read your post saying you blew into the sim tray slot, and I decided to blow VERY hard and the crackling got worse, but when I stopped it was gone. Maybe try that?