'Behavior app when update app from android device 12 or lower to android 13

I have two question, please help me confirm that.

Effects on updates to existing apps If your app targets 12L or lower, the temporary grant lasts until the user explicitly selects an option in the notification permission runtime dialog. This means that if the user dismisses the permission prompt without making a selection, the system persists the temporary grant for your app.

=> When will the permission dialog show?

In my app (app target android 12) not yet create notification channel (i create notification channel when i get a notification from FirebaseMessagingService but in my case i never get a notification) in android 12, after that update to android 13, push notification

=> Is there any permission dialog show when i open app?



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