How do I turn off all notifications? (rather than each one individually)


How do I turn off all notifications? (rather than each one individually).

I see this screen but I don’t see an option to turn off all notifications.

Phone is an Oppo

I don’t want silent mode because I want my alarm clock app to function. And since the last android update, my alarm clock app won’t override silent mode. And I might want to receive calls. So, not silent mode.

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