Tutorial by Examples: doze

Android 6 (API23) introduced Doze mode which interferes with AlarmManager. It uses certain maintenance windows to handle alarms, so even if you used setExactAndAllowWhileIdle() you cannot make sure that your alarm fires at the desired point of time. You can turn this behavior off for your app using...

Open phone's settings open battery open menu and select "battery optimization" from the dropdown menu select "all apps" select the app you want to whitelist select "don't optimize" Now this app will show under not optimized apps. An app can check whether it's...