If you're using an old version, please download the latest version of the Sajda app.

Go to your device settings and turn off "Battery Saver" mode.

Check Sajda app settings. Go to "Notifications and Sounds," tap "Notifications enabled," then tap "Adhan sound" and choose "A sound for all prayer times."

Go to the main screen of the app. Tap the bell icon next to the prayer name. Make sure all 5 bells are turned on.