If you are using a phone running Android Operating System (OS) version 8.0 or greater, your alert sounds must be set in the Settings section of your mobile device. 


CONFIGURE MOBILE PHONE SETTINGS - ANDROID DEVICES

Use the steps below to find your Android Operating System (OS) 


→ Navigate to your phone’s Settings app

→ Select About Phone

→ Confirm Android Version is 8.0 or greater


SETTING ALERT TONES VIA ANDROID MOBILE APP

→ Tap

→ Select Alert Sounds to display audible alerts

 Verify Show notifications is enabled

→ Select New Messages

→ Select Alerting

→ Select Sound