It could be because of the settings that are done on your device. You can change the below settings of your device in order to receive notifications.
Method 1
Please go the phone's settings, look for 'Battery', click on 'High Background Power Consumption' and then enable 'PetBacker' app to receive the notifications.
![](https://content.petbacker.com/images/cms/articles/vivo-fix-1.jfif)
![](https://content.petbacker.com/images/cms/articles/vivo-fix-2.jfif)
![](https://content.petbacker.com/images/cms/articles/vivo-fix-3.png)
OR
Method 2
Step 1:
Enable "Auto-Start" for PetBacker
Step 2:
Go to i manager --> App Manager --> Autostart Manager --> Enable PetBacker App
or
Settings --> More Settings --> Applications --> Autostart --> Enable for "PetBacker"
![](https://content.petbacker.com/images/cms/articles/vivo-fix-4.png)
Step 3:
Click on App Manager
![](https://content.petbacker.com/images/cms/articles/vivo-fix-5.png)
Step 4:
Click on Auto Start Manager
![](https://content.petbacker.com/images/cms/articles/vivo-fix-6.png)
Step 5:
Enable PetBacker
![](https://content.petbacker.com/images/cms/articles/vivo-fix-7.png)
Step 6:
After following the above steps come back to :-
App Manager --> Tap on Uninstallation / Installed App --> PetBacker --> Enable Show Notification
![](https://content.petbacker.com/images/cms/articles/vivo-fix-8.png)
![](https://content.petbacker.com/images/cms/articles/vivo-fix-9.png)
or
Settings --> More Settings --> Application --> PetBacker --> Enable Notification
![](https://content.petbacker.com/images/cms/articles/vivo-fix-10.png)
![](https://content.petbacker.com/images/cms/articles/vivo-fix-11.png)