Brand-specific notes
- Samsung Galaxy: very fine speaker mesh — run 2–3 sessions for full ejection
- Google Pixel Pro: dual speakers — run upright AND inverted
- Xiaomi / Redmi: common dust buildup — pair 165Hz with 528Hz
- OnePlus / Realme / Vivo: single bottom-firing speaker — straightforward 165Hz session
Android-specific steps
- Open Chrome and visit SpeakerRescue tool
- Select Android from the device menu
- Increase media volume to maximum (not ringer — these are separate)
- Hold the phone speaker-down over a soft cloth
- Tap the 165Hz mode and let it run for 30–60 seconds
If the speaker is still muffled
Run the 528Hz dust mode for a final pass. If sound is still distorted, leave the phone in silica gel for 24 hours and retry.