1.
From home, tap Apps
messaging app.
2.
Choose a messaging app.
The default messaging app is set.
Note: If you choose a default messaging app other than Messages (for example, Google Hangouts), you
will not be able to use the standard Messages app unless you restore it as the default messaging app.
Sounds and Notifications Settings
The Sounds and notifications settings menu lets you control your phone's audio, from ringtones and alerts
to tap tones and notifications.
Settings
> Settings
> More connection settings
> Default
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