i played a left and right speaker test on youtube. When the screen is on portrait mode, the right speaker is the earpiece and the left speaker is the main speaker, but
iPhone X, 8, 8 Plus, 7, 7 Plus, 6, 6s, 6 Plus Left Speaker Not Working (Fixed) - YouTube
Why Left Speaker Not Working on iPhone? - YouTube
Why does only one iPhone X speaker work? - Apple Community
iPhone XS, XS Max, and XR Left Speaker Not Working (Fixed) - YouTube
Solved] How to Fix iPhone Speaker Not Working
iPhone XS Stereo Speakers not working | MacRumors Forums
How to Fix the iPhone X Ear Speaker Not Working Problem?
Why is My Left Speaker Not Working On My iPhone? | Decortweaks
iPhone Ear Speaker Not Working? Here's The Fix!
Speakerphone Not Working On iPhone? Here's The Real Fix!
How to fix a broken iPhone speaker | Asurion
How To Perform iPhone Ear Speaker Test With Quick Fixes Quickly- Dr.Fone
iPhone X Lower Speaker Replacement - iFixit Repair Guide
How to Fix iPhone Ear Speaker Not Working?
iPhone 12 Troubleshooting - iFixit
iPhone Speaker Not Working? Here's How to Fix the Issue
Why Left Speaker Not Working & No Sound on iPhone
why is the left speaker not working on my… - Apple Community
iPhone X Ear Speaker Replacement
8 Ways to Fix It When an iPhone Speaker Is Not Working