ProofStamp Call Diagnostic

Test sequence

Tap Start diagnostic and say “before call”.
Start a cellular call, turn on speakerphone, then tap Call started.
Speak yourself and ask the other person to speak.
End the call, return here, tap Call ended, and say “after call”.
Tap Stop diagnostic and listen to the recording.

Phase: idle Page: visible

00:00

Ready

Live microphone level. Watch what happens when the call starts.

Ready. This test needs microphone permission.

Current microphone state

Track muted

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Track state

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Echo cancellation

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Noise suppression

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Auto gain control

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Sample rate

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Channels

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Result

Duration

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Size

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Format

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Peak RMS

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Call-phase avg RMS

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SHA-256

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Event log

This test does not access protected phone-call audio. It only measures what the browser microphone receives. Android may leave the recorder running while providing silence.