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This happens when your phone has no text-to-speech voice installed for the chosen language. The quickest fix: open Settings → Always use online voice in DigiSoundBox and keep internet on — it uses our high-quality cloud voice and works even with no voice pack on the phone. You can also install a voice via your phone’s Settings → Text-to-speech output → Install voice data (Google Text-to-Speech recommended).

Your phone is likely closing the app to save battery. Set DigiSoundBox to Unrestricted / Don’t optimize in battery settings, and turn on Autostart. On Xiaomi/Redmi (MIUI/HyperOS), Oppo, Vivo and similar phones this step is essential — the app’s on-screen setup guide links you straight to the right screen.

Make sure that payment app is ticked in the Apps list and that notification access is still granted. Some phones revoke notification access after an update — re-grant it if needed.

Open Settings → Muted Banks (SMS) and add the sender name (for example HDFCBK). Messages from muted senders are skipped — no voice, no chime.

The short chime before each announcement is off by default. Toggle it under Settings → Alert tone.

Yes. The on-device voice works offline. The optional HD online voice and staff sync need internet.

Premium unlocks the natural HD voice and is an optional upgrade through Google Play. The core payment announcements are free.