Voice sounds muffled when putting phone on ear after opening
After having opened my phone (for replacing the lightning unit), my voice sounds muffled to others when holding the phone next to my ear. It sounds okay if I leave a few mm air gap. I have turned off the rear mike in the settings, which seems to improve the sound quality, but it seems that there are vibrations from my voice that confuse the rear mic when they are transmitted via the case. Any advise? One remark: After having reassembled my phone, I have not yet used the adhesive tape ring for glueing the display back to the case, since I am not sure whether I need to open the phone again for fixing this issue elsewhere inside.
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