Quick answer
A vibration can come from enclosure resonance, a case touching the phone, debris or a speaker issue.
Remove the case, compare tones and note whether the vibration occurs only around one frequency or with every source.
Common causes
How to distinguish normal resonance from an unusual vibration or buzzing sound.
- Case or enclosure resonance
- Debris near grille
- A narrow frequency response issue
- Loose or damaged component
- Source-specific vibration
What to check step by step
- Compare two different audio sources.
- Test at a moderate level.
- Change one variable at a time.
- Note whether the symptom is constant or limited to a frequency or app.
- If it persists, avoid stressing the device and consider a professional check.
How to test it online
Remove the case, compare tones and note whether the vibration occurs only around one frequency or with every source.
Hum and vibration test — Online. A vibration can come from enclosure resonance, a case touching the phone, debris or a speaker issue.
How to interpret the result
A vibration can come from enclosure resonance, a case touching the phone, debris or a speaker issue.
Remove the case, compare tones and note whether the vibration occurs only around one frequency or with every source.
What to avoid
- Do not insert needles, clips or objects into the grille.
- Avoid liquid and intense heat during checks.
- Do not keep the volume at maximum during a prolonged test.
When to consider a professional check
If there is visible damage, an unusual smell, abnormal heat, charging problems, or persistent symptoms after a drop or liquid exposure, stop testing and contact the manufacturer or a repair service.
Summary
A vibration can come from enclosure resonance, a case touching the phone, debris or a speaker issue. Remove the case, compare tones and note whether the vibration occurs only around one frequency or with every source.