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Version: 1.31

Device-Specific Issues

Many Android manufacturers add aggressive battery management on top of stock Android. These settings can prevent Auto Call Scheduler from running in the background, causing scheduled calls to silently fail.

tip

The app has a built-in Device Guidance screen (hamburger menu → Device Guidance) that detects your phone brand and shows tailored instructions. Try that first.

Xiaomi / Redmi / POCO​

Xiaomi's MIUI is one of the most aggressive at killing background apps.

Required settings:

  1. Background auto start: Settings → Apps → Background auto start → Auto Call Scheduler → On. If you do not see it, use Settings → Apps → Manage apps → Auto Call Scheduler → Autostart.
  2. App battery saver: Settings → Battery → App battery saver → Auto Call Scheduler → No restrictions.
  3. Recent apps lock: Recent apps → Auto Call Scheduler card → Lock.

Samsung​

Samsung's One UI has sleeping/deep sleeping app lists that restrict background activity.

Required settings:

  1. Remove from sleeping apps: Settings → Battery → Background usage limits → Sleeping apps → Remove Auto Call Scheduler
  2. Add to Never sleeping apps: Settings → Battery → Background usage limits → Never sleeping apps → Add Auto Call Scheduler
  3. Disable Adaptive battery (optional): Settings → Battery → Adaptive battery → Off

Huawei / Honor​

EMUI has multiple layers of battery management.

Required settings:

  1. Auto-launch: Settings → Battery → App launch → Auto Call Scheduler → Toggle off auto-manage, enable all three toggles manually (Auto-launch, Secondary launch, Run in background)
  2. Ignore battery optimization: Settings → Battery → Battery optimization → Auto Call Scheduler → Don't optimize

Oppo / Realme / OnePlus (ColorOS / OxygenOS)​

Required settings:

  1. Auto-startup: Settings → App management → Auto-startup → Enable Auto Call Scheduler
  2. Battery optimization: Settings → Battery → Battery optimization → Auto Call Scheduler → Don't optimize
  3. Allow background activity: Settings → App management → Auto Call Scheduler → Allow background activity

Vivo (Funtouch OS)​

Required settings:

  1. Autostart: Settings → More settings → Applications → Autostart → Enable Auto Call Scheduler
  2. High background battery consumption: Settings → Battery → Background Power Consumption Management → Auto Call Scheduler → Allow

Other Brands​

For brands not listed above:

  1. Check the app's Device Guidance screen for any available instructions
  2. Look for settings related to:
    • Autostart or auto-launch
    • Battery optimization
    • Background app restrictions
    • Sleeping or frozen apps
  3. Make sure Auto Call Scheduler is excluded from all battery restrictions

Verify It's Working​

After applying the settings:

  1. Create a test schedule set 2–3 minutes in the future
  2. Close the app completely (swipe from recent apps)
  3. Lock your phone
  4. Wait for the scheduled time
  5. If the call triggers, your settings are correct

If it still doesn't work, see Calls Not Triggering for additional steps.