For correct work of application:
1) Open “Settings ⟶ App Management ⟶ Prof Reminder”:
Screenshot
1.1) Turn ON “Allow Auto Startup”,
Screenshot
1.2) Select “Power Saver ⟶ Allow Background Running”,
Screenshots
1.3) Open “Manage Notifications” and turn ON “Allow Notifications”,
1.4) Open “Service Started” and turn ON “Display on Status Bar” and “Display on Lockscreen”.
2) Open “Settings ⟶ Battery”:
2.1) Turn OFF “Power Saving Mode”,
Screenshots
2.2) Turn OFF “Smart Power Saver”,
Screenshot
2.3) Turn OFF “Power Saver Options ⟶ Sleep Standby Optimization”.
Screenshots
3) “Lock” app:
3.1) Open Prof Reminder,
3.2) Tap “Menu” button to reveal your open apps,
3.3) Tap on “≡” button,
3.4) Tap on “Lock” icon.
Screenshot
