Turn off the iPhone
Remove the case and screen protector if they block the speaker
Hold the iPhone with the speaker facing downward
Tap the iPhone gently to dislodge loose debris
Use a soft, dry, clean brush to sweep the speaker grille
Use a clean, dry, soft-bristled toothbrush if needed
Use a microfiber cloth to wipe the exterior
Use a wooden or plastic toothpick very gently for visible lint
Use low-tack adhesive putty lightly on the speaker area
Use compressed air only in short, gentle bursts from a distance
Avoid liquids, sharp metal tools, and excessive pressure
Repeat the cleaning process if needed
Test the speaker after cleaning
Seek professional service if sound remains blocked or distorted