For correct work of application:

1) In “Settings ⟶ Battery” turn OFF “Power Saving” and “Smart Power Saver”.

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2) In “Settings ⟶ Battery ⟶ Custom Power Saver ⟶ Prof Reminder” select “Allow Background Running”.

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3) In “Settings ⟶ Battery ⟶ Power Saver Options” turn OFF “Sleep Mode”.

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4) Start app “Phone Manager”, in “Privacy Permissions ⟶ Startup Manager” turn ON Prof Reminder.

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