How to add apps to the whitelist of system task killer function?

Our App Usage, aProfiles, and 2 Battery apps keep running in the background for monitoring the device state. Unfortunately, some devices built-in a task killer (optimizer, memory cleaner, or battery saving) function which kills our apps in the background and results in it stops to work. To fix the problem, please go through system settings or built-in apps to add our apps to the whitelist.

Please first visit https://dontkillmyapp.com/, tap the block of your device brand and then follow instructions of the solution section for adding our apps to the whitelist.

Here also listed some examples about how to add our apps to the whitelist:
THESE INSTRUCTIONS ARE NOT EXACT. With over 17,000 different Android models from all over the world, every device is a little different. If you don't see the exact same things as listed here, poke around in the Android Settings or on the home screen for an app that might be the "battery saver", "optimizer", or memory cleaner options. There might even be multiple options.

Asus devices:
================================
* Launcher > Settings > Power management > Auto-start manager > tap over the DOWNLOADED page > switch to "Allow" for our apps

or

* Apps drawer > Mobile manager > Boost > Enable Super Boost > turn off the Super Boost option or add our apps to the protected apps list

and

* Launcher > Settings > Battery > PowerMaster > Auto-start Manager > switch to "Allow" for our apps


Htc devices
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* Apps drawer > Boost+ > Optimize background apps > tap our apps > select Off

or 

* Apps drawer > Boost+ > Boost > check the check box for our apps > tap OK to the question dialog


Huawei devices:
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Android 7.x+
    * Launcher > Settings > Battery > Close apps after screen lock > find our apps in the list and make sure the switch is set to off

     and

     * Launcher > Settings > Memory and Storage > Storage cleaner > Memory cleanup > uncheck the box next to our apps > back to Storage Cleaner > tap the top-right Gear icon > Memory cleanup whitelist > check the box next to our apps

     and

     * Launcher > Settings > Apps > tap the Gear at the bottom for Settings > Special access > Exempt from battery optimization > tap Allowed at the top and choose All apps > find our apps and set to Allow

     and

     * open our apps > tap the task switcher button (the third button in the bottom system navigation bar) > tap the Lock icon for our apps to keep it from being closed

Android 6.x+:
     * Apps drawer > Phone Manager > Battery manager(or Energy Saver) > Protected apps > turn on the switch for our app

     and

     * Launcher > Settings > Advanced Settings > Battery Manager > tap the top-right Gear icon > check "History of closed apps" to see if our app is shown in the list. If yes, then disable the option for "Close excessively power-intensive apps"

If the instructions above do not help, please try the instructions below:
* Launcher > Settings > tap All tab > Protected apps > turn on the switch for our app

or

* Launcher > Settings > Battery > Launch > turn off the switch for our app (i.e. Manage manually)

or

* Launcher > Settings > Apps > tap our app > Battery > turn off the "Power-intensive prompt" option > tap the Launch item > turn on "Auto-launch" and "Run in background" options


Lenovo devices:
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* Launcher > Settings > Power manager > Background app management > add our apps to the unrestricted (or allow auto-start) list



LG devices:
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* Launcher > Settings > General > Battery > select Power saving exclusions > make sure that our app is excluded



OnePlus devices:
================================
Android 8.x+:
    * Launcher > Settings > Battery > Battery optimization > find our app and set to "Don't Optimize"

    and 

    * Launcher > Settings > Advanced > Recent app management > choose "Normal clear"

Android 7.x+:
    * open our app > tap the task switcher button (the third button in the bottom system navigation bar)  > tap the Lock icon for our apps to keep it from being closed

    and

    * Launcher > Settings > Battery > MENU > Aggressive doze & app hibernation > either turn off Aggressive doze & app hibernation for all apps or check the box next to our apps to move it to the "Not optimized" category

    and

    * Launcher > Settings > Battery > MENU > High power usage apps > turn off "Auto close high power usage apps"

    and

    * Launcher > Settings > Apps > tap the top Gear icon > Apps auto-launch > either disable Apps auto-launch or check the box next to our apps to move it to the "Allow auto-launch" category

    and

    * Launcher > Settings > Advanced > Recent app management > choose "Normal clear"


Oppo devices:
================================
* Launcher > Settings > Battery > turn the "Low Power Mode" option off > Energy saver > select our apps > make sure that "Background Freeze", "Abnormal Apps Optimization", and "Doze" are disabled

or 

* Apps drawer > Security center > Privacy permissions > Auto-run management (or Startup manager) > turn on the switch for our apps

and

* Launcher > Settings > Application management > Running tab > tap the Locker icon for our apps


Samsung devices:
================================
Android 9.x+:
    * Launcher > Settings > Device care > Memory Security > MENU > choose "Apps That Aren't Checked" > at the bottom of the screen, select "Add" and choose our apps to exclude it from being closed

Android 7.x+:
    * Launcher > Settings > Device maintenance > under Unmonitored Apps, choose Add Apps > add our apps to the list

Android 6.x+:
    * Apps drawer > Smart manager > Battery > Detail > tap our app > turn off

If the instructions above do not help, please try the instructions below:
* Launcher > Settings > Security > Auto-start management > set our apps to 'Allowed'

or

* Launcher > Settings > Battery > Detail > tap our app > turn off

or

* Launcher > Settings > Battery > Battery usage > MENU > Optimize battery usage > select "All apps" > turn off the switch for our apps


Sony devices:
================================
* Launcher > Settings > disable the Stamina mode

or

* Launcher > Settings > Storage & memory > turn off the "Smart cleaner" option or tap the top-right MENU icon > Advanced > add our apps to the whitelist



Vivo devices:
================================
* Apps drawer > iManager > App manager > Autostart manager > allow our apps to auto-start in the background


Wiko devices:
================================
* Apps drawer > Telephone Administration > add our apps to the battery optimization whitelist

and

* Launcher > Settings > Devices > Protected Applications > add our apps to the list


Xiaomi / MIUI devices:
================================
MIUI 10:
* Launcher > Settings > Apps > Manage apps > tap our app > enable "Autostart" option > Other permissions > enable "Start in background" > BACK > Battery saver > select "No restrictions"

or
* Apps drawer > Security app > Permissions > tap Autostart > allow our app to autostart by turning on the switch

or

* Launcher > Settings > Additional Settings > Battery and Performance > Manage apps' battery usage > turn "Power saving modes" off > open the Security app > navigate to Permissions > add our app to Autostart > invoke Task Manager > find our app > drag it downwards until the padlock icon appears


Android 6.x or greater devices:
================================
If the device runs on Android 6 or greater version, please continue to add our apps to the not optimized list of Doze mode:

* Launcher > Settings > Apps > tap our app > Battery (may tap Advanced to expand all items) > Battery optimization > select "All apps" > tap our app > select "Don't optimize" for it

or 

* Launcher > Settings > Apps > Special app access > Battery optimization > select "All apps" > tap our app > select "Don't optimize" for it

or
* Launcher > Settings > Apps > top Advanced settings toolbar icon > Battery optimization > select "All apps" > tap our app > select "Don't optimize" for it

or

* Launcher > Settings > Apps > top Advanced settings toolbar icon > Special access > Battery optimization > select "All apps" > tap our app > select "Don't optimize" for it

or

* Launcher > Settings > Apps > top Advanced settings toolbar icon > Ignore optimizations > select "All apps" > tap our app > select "Allow" for it

or 

* Launcher > Settings > Battery > MENU > Battery optimization > select "All apps" > tap our app > select "Don't optimize" for it


Android 8.x or greater devices:
================================
If the device runs on Android 8 or greater version, please continue to add our apps to the not optimized list of Doze mode by reading above "Android 6 or greater devices" section.

In addition, you have to enable our apps to be run in the background:
* Launcher > Settings > Apps > tap our app > Battery > turn on the "Background activity" option

or 

* Launcher > Settings > Apps > tap our app > Battery > Background restriction > tap the Remove button to enable the app can use battery in background

If you have the instruction for other devices, please let us know.