Fix Delayed App Notifications on HyperOS (Xiaomi, POCO, Redmi)

The Quick Fix

If your Xiaomi, POCO, or Redmi phone running HyperOS delays notifications for apps like WhatsApp, Telegram, or Gmail, the operating system is aggressively closing their background processes. You can fix this issue immediately by turning off battery restrictions, enabling autostart permissions, and locking the app in your recent tasks screen.

To restore instant alerts, open your app settings, switch the battery profile to No restrictions, enable Autostart, and apply the Padlock icon in the Recents screen. If your phone still misses alerts while idle, disable Sleep Mode in your battery settings. Avoid applying these background locks to non-essential apps, as keeping too many services active can increase battery drain and cause performance lag on devices with 4GB or 6GB of RAM.

Step-by-Step Guide

1. Remove Battery Saver Restrictions

   Open Settings > Apps > Manage apps, or long-press the affected app's icon on your home screen and tap App info.

   Scroll down and tap Battery saver.

   Change the setting from the default option to No restrictions.

   

2. Enable Autostart Permissions

   From the same App info screen (or navigate to Settings > Apps > Permissions > Background autostart), locate the Autostart setting.

   Toggle the switch to ON to allow the app to launch its background synchronization tasks automatically.

   

3. Lock the App in Recents Memory

   Open the affected messaging or email application.

   Open the Recents multitasking screen by swiping up from the bottom of the display or tapping the square navigation button.

   Long-press the preview card for the app (or swipe down on the card if required by your launcher build).

   Tap the Padlock icon so the app card displays a locked indicator. If the padlock icon is missing, verify that your device is using the default system launcher rather than a third-party launcher.

   

4. Alternative Step: Disable Sleep Mode (If Notifications Still Delay While Screen Is Off)

   Open Settings > Battery.

   Tap the gear icon in the upper-right corner to open battery settings.

   Navigate to Scenarios (or Additional features on some builds).

   Toggle Sleep Mode to OFF.

Why did this happen?

HyperOS uses aggressive battery and memory management rules that kill idle background processes to conserve power. This severing of the background process cuts off the app's connection to push-notification servers until you bring the app back to the foreground manually.

FAQ

Will setting apps to No restrictions drain my battery?

Setting background permissions to No restrictions and enabling Autostart will slightly increase power consumption, so apply this configuration only to your essential messaging and work apps.

Why is the padlock icon missing in the Recents menu?

Third-party launchers can hide the memory lock control, so you will need to switch back to the stock POCO or Xiaomi system launcher to lock apps in memory.

Can I lock all my background apps to keep them open?

Locking too many background apps can saturate available RAM on devices with 4GB or 6GB of memory, which can lead to system interface lag.

Did this work?

Did this fix the HyperOS delayed notifications? Let me know in the comments below!