Step 1: Settings SettingsBTN.png > Device care > Battery > Menu > Settings

device carebatterymenu 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 listed.
  • Optimize settings > Turn OFF 
  • check settings

Step 2: Settings SettingsBTN.png > Device care > Memory > Menu > Apps that aren't checked > Add > WhatsApp Service > Add

memory2-min.pngApps that aren't checkedadd apps

Step 3: Settings SettingsBTN.png > Biometrics and security > Permission usage monitor > WhatsApp Service > Turn OFF

Biometrics and securityPermission usage monitorWhatsApp Service

Step 4: Settings SettingsBTN.png > Apps > WhatsApp Service > Mobile data > Allow background data usage & Allow app while Data saver on > Turn ON

  appswhatsapp servicemobile dataallow settings on