Select device:

Huawei P20, Huawei P20 Lite, Huawei Mate 10

- Go to: < Battery > App launch>> and then set Voico app to “Manage manually” and make sure everything is turned on.

Huawei P9 Plus

- Go to: < Apps > Settings > Special access > Ignore battery optimisation>> and select allow for Voico app.

Huawei Honor 9 Lite, Huawei Mate 9 Pro

- Go to: < Battery > Launch >> and set Voico app to “Manage manually” and make sure everything is turned on.

Other

EMUI 6+ devices (and some EMUI 5 devices)
- Go to: < Advanced Settings > Battery manager>> and select: Power plan is set to Performance
- Go to: < Advanced Settings > Battery Manager > Protected apps>> and make sure that Voico is Protected
- Go to: < Apps > Advanced (At the bottom) > Ignore optimisations > Allowed > All apps>> Find Voico app on the list and set to Allow

Galaxy S9/S10

- Go to: < Device care > Batery > Settings (dot menu in the right upper corner)>>
- Disable Put unused Apps to sleep
- Disable Autodisable unused
- Tap on Sleeping Apps button and check if Voico is listed there. If so, remove the App from the list, using trash icon.

Galaxy S8 (j6ltedx) and later

Go to: < Device maintenance > Battery>>
Make sure that Voico is not listed under Sleeping Apps, then go to Unmonitored Apps, press 3-dot menu and add Voico to the list of unmonitored Apps.

Other

Go to: < Applications >> select three dot menu (top right corner) > Special Access > Optimize Battery usage, Find Voico on the list and make sure that it is not selected.

OnePlus 6 and higher

Go to: < Battery > Battery optimization > (three dots) > Advanced optimization>>
- Disable Deep optimization
-Disable Sleep standby optimization
Go to: < advanced.> recent app management>>
- Select option Normal clear

OnePlus below 6

Go to: < Battery > Battery optimization > (three dots) > Enhanced optimization>>
- Disable Deep optimization
-Disable Sleep standby optimization
Go to: < advanced.> recent app management>>
- Select option Normal clear

Go to: < Mobile Manager > Settings >>
- Uncheck Clean up in suspend
Uncheck Auto-deny apps from auto starting

Go to: < Advanced Settings > Battery manager > Power plan set to Performance >>
Device Settings > Advanced Settings > Battery Manager > Protected apps – check your app as Protected
Enable Device Settings > Apps > your app > Battery > Power-intensive prompt and Keep running after screen off

Xiaomi Mui10

- Go to: < Advanced Settings > Battery manager>> and select: Power plan is set to Performance
- Go to: < Advanced Settings > Battery Manager > Protected apps>> and make sure that Voico is Protected
< Apps > your app > Battery > Power-intensive prompt>> and chose
Keep running after screen off

- Go to: < Additional Settings > Battery & Performance > Manage apps’ battery usage>>:
1. Switch Power Saving Modes to Off
2. Choose the next options: Saving Power in The Background > Choose apps > select your app > Background Settings > No restrictions
3. Security > Battery > App Battery Saver > Voico > No restriction
4. Security app > Permissions > Auto-start > Enable autostart for Voico

App pinning
When you open recent apps tray, drag your app downwards – it will be locked. So even if you clear recent apps it will not clear from the background. Drag downwards again to clear your app from the background.

Go to Phone Assistant / Manager > Battery > turn off Eco Mode.
Go back and go to Manual mode
Tap on the Gear icon on top right > Background apps whitelist > Now select Voico

Lenovo P2

in the overview of running apps (right top corner) find Voico and enable the padlock icon on the App.

Oppo F1S

pin your app to the recent apps screen
enable your app in the app list inside the security app’s “startup manager” and “floating app list” (com.coloros.safecenter / com.coloros.safecenter.permission.Permission)
turn off battery optimizations
give the service a persistent notification to remain in the foreground

Phone settings > Battery > Three dots in the top right corner > Battery optimisation > Apps > Voico

Open up Phone Settings.
Tap Power.
Tap Battery optimization.
Tap Not optimized > All apps to see the complete list of apps.
To turn off battery optimization in an app, tap the app name, and then tap Don’t optimize > Done. Repeat this process to turn off optimization in other apps. To filter the list and see which apps have battery optimization disabled, tap All apps > Not optimized.

Go to Phone settings > Apps > See all apps.
Tap on the right top corner menu > Show system.
Find Power saver app in the list, select it and Force close. It will remain stopped for a while, but will restart itself eventually.