Question:

There is noise in the speaker sound of the device.

Answer:

Our smartphones have external Speaker/Receiver/Microphone holes.

These holes can be accidentally exposed to high air pressures (e.g., from an air gun).

High air pressure can damage internal components of the speakers/receivers/microphones.

We recommend NOT using air guns for cleaning.

If needed, gently clean holes with a soft, scratch-free brush to remove debris.