Mobile Recorder

SAMSUNG, Android 10

1. Settings => Device care => Battery => App power management
   • Adaptive battery => Turn OFF
   • Put unused apps to sleep => Turn OFF
2. Settings => Device care => Memory => Select apps to exclude => Add apps => «Synchronization» => Add
3. Settings => Apps => «Synchronization» => Mobile data => Allow background data usage & Allow app while Data saver on => Turn ON

SAMSUNG, Android 9

1. Settings => Device care => Battery => Menu => Settings
   • Notifications => Turn OFF
   • Adaptive battery => Turn OFF
   • Put unused apps to sleep => Turn OFF
   • Auto disable unused apps => Turn OFF
   • Sleeping apps => Check that the application is not in this list
   • Optimize settings => Turn OFF
2. Settings => Device care => Memory => Menu => Apps that aren't checked => Add => «Synchronization» => Add
3. Settings => Biometrics and security => Permission usage monitor => «Synchronization» => Turn OFF
4. Settings => Apps => «Synchronization» => Mobile data => Allow background data usage & Allow app while Data saver on => Turn ON

SAMSUNG, Android 8

1. Settings => Device maintenance => Battery => Unmonitored apps => Add apps => «Synchronization» => DONE
2. Settings => Lock screen and security => App permission monitor => «Synchronization» => Turn OFF
3. Settings => Apps => «Synchronization» => Mobile data => Allow background data usage & Allow app while Data saver => Turn ON
4. Settings => Apps => «Synchronization» => Battery => Allow background activity => Turn ON

SAMSUNG, Android 7

1. Settings => Device maintenance => Battery => Unmonitored apps => Add apps => «Synchronization» => DONE
2. Settings => Apps => «Synchronization» => Mobile data => Allow background data usage & Allow app while Data saver => Turn ON

SAMSUNG, Android 6

1. Settings => Battery => In the App Power Saving Mode Click on « DETAIL » button => «Synchronization» => Turn OFF
2. Settings => Data usage => MOBILE=> Set mobile data limit => Turn OFF
3. Settings => Data usage => WLAN => «Synchronization» => Application data usage => Restrict background data => Turn OFF

SAMSUNG, Android 5

1. Settings => Battery => DETAIL => «Synchronization» => Turn off

SAMSUNG, Android 4

1. Settings => Battery => DETAIL => «Synchronization» => Turn off

OPPO

1. «Security Center» → «Privacy Permissions» → «Start up Manager» → Allow «Synchronization» to start in background.

OPPO, Android 7

1. Settings → App Management → Installed → «Synchronization» → Permissions → Allow All
2. Settings → App Management → «Synchronization» → Power Saver → Allow Background Running → Turn ON
3. Settings → Privacy Permissions → Startup Manager → «Synchronization» → Turn ON

OPPO, Android 8

1. Settings → Security → Permissions → Apps → «Synchronization» → Allow All
2. Settings → App Management → «Synchronization» → Permissions → Allow All
3. Settings → App Management → «Synchronization» → Power Saver → Allow Background Running → Turn ON
4. Settings → App Management → «Synchronization» → Allow Auto Startup → Turn ON

Xiaomi

1. Settings => Manage apps => «Synchronization»
   • Autostart => Turn ON
   • Other permissions => Enable All => Accept
   • Battery Saver => No restrictions
2. Settings => Battery & Performance => Battery optimization => Settings icon
   • Turn off mobile data when device is locked => Never
   • Clear cache when device is locked => Never
   • Battery drain notifications => Turn OFF
3. Security => Settings icon
   • Boost speed => Lock apps => «Synchronization» => Turn ON
   • Cleaner => Remind to clean => Turn OFF
   • Cleaner => Update automatically => Turn OFF
   • Security scan => Auto updates => Turn OFF

Huawei/Honor Android 10

1. Settings => Apps => Apps => «Synchronization»=> Power usage details
   • Power consumption alert => Turn OFF
   • App launch => Manage automatically => Turn OFF => OK
2. Settings => Apps & notifications => Apps => «Synchronization» => Data usage => Turn all ON
3. Settings => Battery => More battery settings => Stay connected when device sleeps => Turn ON
4. Settings => Mobile network => Data usage => Network access
   • Network access/Installed apps => Turn ON Mobile Data & Wi-Fi for «Synchronization»
   • Advanced network settings/Installed apps => Turn ON Mobile Data & Wi-Fi for «Synchronization»
5. Settings => Mobile network => Data usage => Smart Data Saver => Installed apps => «Synchronization» => Turn ON
6. Settings => Apps => Apps => Menu => Special access => Unrestricted data access => «Synchronization» => Turn ON
7. Optimizer => Settings icon => Online virus scan => Never

Huawei/Honor Android 9

1. Settings => Apps => Apps => «Synchronization»=> Power usage details
   • Power consumption alert => Turn OFF
   • App launch => Manage automatically => Turn OFF => OK
2. Settings => Apps & notifications => Apps => «Synchronization» => Data usage => Turn all ON
3. Settings => Battery => Settings icon => Stay connected when device sleeps => Turn ON
4. Settings => Wireless & Networks => Data usage => Network access
   • Network access/Installed apps => Turn ON Mobile Data & Wi-Fi for «Synchronization»
   • Advanced network settings/Installed apps => Turn ON Mobile Data & Wi-Fi for «Synchronization»
5. Settings => Wireless & Networks => Data usage => Data saver => Installed apps => «Synchronization» => Turn ON

Huawei/Honor Android 8

1. Settings => Apps & notifications => Apps => «Synchronization»=> Battery
   • Power-intensive prompt => Turn OFF
   • Launch => Manage automatically => Turn OFF => OK
2. Settings => Apps & notifications => Apps => «Synchronization» => Data usage => Turn all ON
3. Settings => Battery => Settings icon => Keep mobile data on when sleeping => Turn ON
4. Settings => Wireless & Networks => Mobile data => Networked apps
   • Networked apps/Installed apps => Turn Mobile Data & Wi-Fi for «Synchronization»
   • Advanced network management/Installed apps => Turn Mobile Data & Wi-Fi for «Synchronization»
5. Settings => Wireless & Networks => Mobile data => Data saver => Installed apps => «Synchronization» => Turn ON

Vivo Android 10

1. i Manager => App Manager => Permission management => Apps => «Synchronization» => Single permission settings => Turn ON All »
2. i Manager => Data Monitor => Network management => «Synchronization» => Data network & WLAN => Turn ON
3. i Manager => Security detection => Settings icon => Regular reminder for detection => Turn OFF
4. Settings => Mobile network => «Synchronization» => Turn ON
5. Setting => Mobile network => Data-saving mode => Whitelist apps => «Synchronization» => Turn ON
6. Settings => Battery => High background power consumption => «Synchronization» => Turn ON

Vivo Android 9

1. i Manager => App Manager => Permission management => Apps => «Synchronization» => Single permission settings => Turn ON All »
2. i Manager => Data Monitor => Network management => «Synchronization» => Data network & WLAN => Turn ON
3. i Manager => Security detection => Settings icon => Regular reminder for detection => Turn OFF
4. Settings => Mobile network => «Synchronization» => Turn ON
5. Setting => Mobile network => Data-saving mode => Whitelist apps => «Synchronization» => Turn ON
6. Settings => Battery => High background power consumption => «Synchronization» => Turn ON

Vivo Android 8

1. i Manager => App Manager => Permission management => Apps => «Synchronization» => Single permission settings => Turn ON All »
2. i Manager => Data Monitor => Network management => «Synchronization» => Data network & WLAN => Turn ON
3. i Manager => Virus scan => Settings icon => Regular scan reminder => Turn OFF
4. Settings => Mobile network => «Synchronization» => Turn ON
5. Setting => Mobile network => Data-saving mode => Whitelist apps => «Synchronization» => Turn ON
6. Settings => Battery => High background power consumption => «Synchronization» => Turn ON

Vivo Android 7

1. i Manager => Permission management => Apps => «Synchronization» => Single permission settings => Turn ON All »
2. i Manager => Data Monitor => Network management => «Synchronization» => Data network & WLAN => Turn ON
3. i Manager => Virus scan => Settings icon => Regular scan reminder => Turn OFF
4. Settings => Mobile network => «Synchronization» => Turn ON
5. Setting => Mobile network => Data-saving mode => Whitelist apps => «Synchronization» => Turn ON
6. Settings => Battery => High background power consumption => «Synchronization» => Turn ON

Vivo Android 6

1. i Manager => Power Manager => Normal => Turn ON
2. i Manager => Power Manager => Backstage power => «Synchronization» => Turn ON
3. i Manager => Gear icon => Speedup whitelist => «Synchronization» => Turn ON
4. i Manager => App manager => Autostart manager => «Synchronization» => Turn ON
5. i Manager => App manager => Authority manager => «Synchronization» => Trust this app => Turn ON
6. i Manager => Data Monitor => Network management => «Synchronization» => Data & WLAN => Turn ON
7. i Manager => Virus scan => Regular scan reminder => Turn OFF
8. Settings => Mobile network => «Synchronization» => Turn ON

OPPO/Realme Android 10

1. Settings => SIM Card & Cellular Data => Data Usage => Network Permissions => «Synchronization» => Select 'Wi-Fi & Cellular Data'
2. Settings => SIM Card & Cellular Data => Data Usage => Data Saving => Turn OFF
3. Settings => Privacy => App Permissions => Apps => ««Synchronization» » => Allow All
4. Settings => Battery => Power Saving Mode => Turn OFF
5. Settings => Battery => Smart Power Saver => Turn OFF
6. Settings => Battery => Power saver options => Sleep Standby Optimization => Turn OFF
7. Settings => App Management => App List => « «Synchronization»» => Data Usage Status => Disable Cellular Data & Disable Wi-Fi => Turn OFF
8. Settings => App Management => App List => «Synchronization» => Data Usage Status => Background data => Turn ON
9. Settings => App Management => App List => «Synchronization» => Power Saver => Run in Background => Turn ON
10. Settings => App Management => App List => «Synchronization» => Permissions => Allow All
11. Settings => App Management => App List => «Synchronization» => Auto Startup => Turn ON
12. Settings => App Management => App List => «Synchronization» => Floating Windows => Turn ON

Be careful, with ColorOS 7 or Realme UI 1 : During an audio recording, the notification bar will blink red to warn you that a recording is in progress. It is not possible to hide this, it is a security of the system.

OPPO/Realme Android 9

1. Settings => Dual SIM & Cellular Network => Using Wi-Fi and Cellular Network => «Synchronization» => Select 'Wi-Fi and Mobile data'
2. Settings => Dual SIM & Cellular Network => Data Saving => Turn OFF
3. Settings => Security => Permissions => Apps => «Synchronization» => Allow All
4. Settings => Battery => Power Saving Mode => Turn OFF
5. Settings => Battery => Smart Power Saver => Turn OFF
6. Settings => Battery => Power saver options => Sleep Standby Optimization => Turn OFF
7. Settings => App Management => ««Synchronization» » => Data Usage Status => Network Permissions => Wi-Fi and Mobile Data
8. Settings => App Management => «Synchronization» => Data Usage Status => Background data => Turn ON
9. Settings => App Management => «Synchronization» => Data Usage Status => Unrestricted by "Data Saving" => Turn ON
10. Settings => App Management => ««Synchronization» » => Power Saver => Allow Background Running => Turn ON
11. Settings => App Management => «Synchronization» => Permissions => Allow All
12. S Settings => App Management => «Synchronization» => Auto Startup => Turn ON
13. Settings => App Management => «Synchronization» => Floating Windows => Turn ON
14. Settings => Device & Privacy => Location => Apps Using GPS in Background => «Synchronization» => Turn ON

Be careful, with ColorOS 6 : During an audio recording, the notification bar will blink red to warn you that a recording is in progress. It is not possible to hide this, it is a security of the ColorOS system.

OPPO/Realme Android 8

1. Settings => Dual SIM & Cellular => App Using Wi-Fi and Mobile Data => «Synchronization» => Service => Select 'Wi-Fi and Mobile data'
2. Settings => Security => Permissions => Apps => «Synchronization» => Allow All
3. Settings => Battery => Power Saving => Turn OFF
4. Settings => Battery => Smart Power Saver => Turn OFF
5. Settings => App Management => «Synchronization» => Permissions => Allow All
6. Settings => App Management => «Synchronization» => Power Saver => Allow Background Running => Turn ON
7. Settings => App Management => «Synchronization» => Allow Auto Startup => Turn ON
8. Settings => App Management => «Synchronization» => Allow Notch Area Display => Turn ON
9. Settings => Additional Settings => Device & Privacy => Location Information => Apps That Use GPS in the Background => «Synchronization» => Turn ON

Be careful, with ColorOS 5 : During an audio recording, the notification bar will blink red to warn you that a recording is in progress. If accessibility and device administrator is enabled, the bar will blink orange. For each screenshot there will be a popup displayed to ask if you want to take a screenshot. It is not possible to hide this, it is a security of the ColorOS system.

OPPO/Realme Android 7

1. Settings => Battery => Low Battery Mode => Turn OFF
2. Settings => Battery => Energy Saver => « «Synchronization»» => Background Freeze => Turn OFF
3. Settings => Battery => Energy Saver => «Synchronization» => Abnormal Apps Optimization => Turn OFF
4. Settings => Battery => Energy Saver => «Synchronization» => Doze => Turn OFF
5. Settings => Dual SIM & Cellular => App Using Wi-Fi and Mobile Data => «Synchronization» => Service => Select 'Wi-Fi and Mobile data'
6. Settings => App Management => Installed => « «Synchronization»» => Permissions => Allow All
7. Settings => Security => Self Diagnosis frequency => Turn OFF
8. Settings => Security => Homescreen Acceleration Ball => Turn OFF
9. Security => Privacy Permissions => Startup Manager =>«Synchronization» => Turn ON

OPPO/Realme Android 6

1. Settings => Battery => Low Battery Mode => Turn OFF
2. Settings => Battery => Energy Saver => «Synchronization» => Freeze when in background => Turn OFF
3. Settings => Battery => Energy Saver => ««Synchronization» » => Automatically optimize when an abnormality is detected => Turn OFF
4. Settings => Dual SIM & Cellular => App Using Wi-Fi and Mobile Data => «Synchronization» => Service => Select 'Wi-Fi and Mobile data'
5. Settings => Additional Settings > Application Management => Installed => «Synchronization» => Permissions => Allow All
6. Settings => App Management => Installed => « «Synchronization»» => Permissions => Allow All
7. Settings => Security => Homescreen Acceleration Ball => Turn OFF
8. Security => Privacy Permissions => App Permissions Management => Activate all on ALLOW for ««Synchronization» »
9. Security => Privacy Permissions => Startup Manager =>«Synchronization» => Turn ON

OPPO/Realme Android 5

1. Settings => Battery => Low Battery Mode => Turn OFF
2. Settings => Battery => Energy Saver => «Synchronization» => Freeze when in background => Turn OFF
3. Settings => Battery => Energy Saver => ««Synchronization» » => Automatically optimize when an abnormality is detected => Turn OFF
4. Settings => Dual SIM & Cellular => App Using Wi-Fi and Mobile Data => «Synchronization» => Service => Select 'Wi-Fi and Mobile data'
5. Settings => Additional Settings > Application Management => Installed => «Synchronization» => Permissions => Allow All
6. Settings => Security => Self Diagnosis frequency => Turn OFF
7. Settings => Security => Homescreen Acceleration Ball => Turn OFF
8. Security => Privacy Permissions => App Permissions Management => Activate all on ALLOW for ««Synchronization» »
9. Security => Privacy Permissions => Startup Manager =>«Synchronization» => Turn ON

Infinix Android 8

1. Phone Master => Toolbox => Auto-start management => Enable «Synchronization».
2. Phone Master => Me => Settings => Protected app => Enable «Synchronization».

Infinix Android 5, 6, 7

1. Open Application XOS family => Open XManager => Auto-start manager => «Synchronization» => Enable
2. Open Application XOS family => Open XPower => Advanced settings => Power off screen and sleep => « «Synchronization»» => Enable

Sony Android 7

1. Settings => Battery => Menu/Battery optimization => All others => «Synchronization» => Turn ON
2. Settings => Battery => Stamina mode & Ultra Stamina mode => Turn OFF
3. Settings => Data usage => Data saver => Unrestricted data access=> «Synchronization» => Turn ON
4. Settings => Data usage => Wi-Fi data usage => «Synchronization» => App data usage => Background data & Unrestricted data usage => Turn ON
5. Settings => Data usage => Cellular data usage => «Synchronization» => App data usage => Background data => Turn ON

Sony Android 6

1. Settings => Battery => Stamina mode => Never
2. Settings => Battery => Ultra Stamina mode => Activate => Turn OFF
3. Settings => Battery => Battery optimization => Apps or Others => «Synchronization» => Turn ON
4. Settings => Storage & memory => Smart cleaner => Turn OFF

OnePlus Android 10

1. Settings => Battery => Battery optimization => «Synchronization» => Don't optimize
2. Settings => Apps & notifications => See all xx apps => «Synchronization» => Mobile data & Wi-Fi => Background Data & Unrestricted data usage => Turn ON

HTC

1. Open « Settings » => « Power »
2. Select « Extreme power saving mode » => Turn OFF

Asus

1. Open « Auto-start Manager »
2. Select ««Synchronization» » => Turn ON

Redmi

1. Open Application "Security" >> Go to Permission >> AutoStart >> Enable «Synchronization»
2. Go to Settings >> Additional Settings >> Privacy >> Disable "Verify apps"

Other

1. Settings => Apps & notifications => See all X apps => ««Synchronization» » => Data usage => Background data & Unrestricted data usage => Turn ON
2. Settings => Network & Internet => Data usage => Data saver => Turn OFF