If your WhatsApp notifications are not working, I understand how frustrating that can be.
You don’t see new messages. Calls do not ring. You only notice messages when you open the app. I have helped many people fix this issue, and in most cases, the problem is not WhatsApp itself. It is usually your phone settings silently blocking it.
In this guide, I will walk you step by step through every possible fix — from simple settings to advanced system-level solutions.
This fix worked for me on my Infinix device, and I have helped others fix it on Samsung, iPhone, Tecno, Xiaomi, and more.
Let’s solve it properly.
Table of Contents
Identify the Exact WhatsApp Notification Problem
Before jumping into fixes, ask yourself:
- Do messages come in but there is no sound?
- Do notifications not appear at all?
- Do messages only show when you open WhatsApp?
- Are WhatsApp calls not ringing?
- Do notifications delay when the screen is locked?
- Does it work on WiFi but not on mobile data?
The cause depends on the type of problem.
Basic Fixes That Solve Most Cases
Step 1: Check WhatsApp Notification Settings
Open WhatsApp.
Then tap the three dots at the top right.
Then tap Settings.
Then tap Notifications.
Make sure:
- Conversation tones are enabled
- Notification tone is selected
- Vibrate is enabled
- High priority notifications are enabled
If any of these are turned off, turn them on.
Step 2: Check Phone Notification Settings
Open Settings.
Then tap Apps.
Then tap WhatsApp.
Then tap Notifications.
Make sure:
- Allow notifications is enabled
- Lock screen notifications are enabled
- Banners or pop-ups are enabled
- Message and call categories are enabled
On some phones, each notification type can be turned off separately. Turn everything on for testing.
Step 3: Turn Off Do Not Disturb or Focus Mode
Open Settings.
Then tap Sound & Vibration.
Then tap Do Not Disturb.
If it is on, turn it off.
On iPhone:
Open Settings.
Then tap Focus.
Turn off any active Focus mode.
Fix Battery Optimization (Most Common Cause on Android)
If messages only appear when you open WhatsApp, this is almost always the issue.
Step 4: Disable Battery Optimization for WhatsApp
Open Settings.
Then tap Apps.
Then tap WhatsApp.
Then tap Battery.
Select:
- Allow background activity
- Unrestricted battery usage
On some phones:
Open Settings.
Then tap Battery.
Then tap Battery Optimization.
Find WhatsApp.
Select Don’t optimize.
This single step has fixed the issue for many people I assisted.
Step 5: Allow Background Data
Open Settings.
Then tap Apps.
Then tap WhatsApp.
Then tap Mobile data & WiFi.
Make sure:
- Background data is enabled
- Unrestricted data usage is enabled
If background data is blocked, WhatsApp cannot receive push notifications.
Fix Network-Related Issues
Step 6: Turn Off Data Saver
Open Settings.
Then tap Network & Internet.
Then tap Data Saver.
If it is on, turn it off.
Or allow WhatsApp as an unrestricted app.
Step 7: Reset Network Settings
If notifications delay randomly:
Open Settings.
Then tap System.
Then tap Reset options.
Then tap Reset WiFi, mobile & Bluetooth.
You will reconnect to WiFi afterward.
Advanced Fixes Most Websites Ignore
Step 8: Clear WhatsApp Cache
Open Settings.
Then tap Apps.
Then tap WhatsApp.
Then tap Storage.
Then tap Clear Cache.
Do not tap Clear Data unless necessary.
Step 9: Check Autostart Permission
On Xiaomi, Tecno, Infinix, Oppo, and similar devices:
Open Security app.
Then tap Autostart.
Enable WhatsApp.
If autostart is disabled, notifications may fail when the phone is idle.
Step 10: Clear Google Play Services Cache
Open Settings.
Then tap Apps.
Then tap Google Play Services.
Then tap Storage.
Then tap Clear Cache.
Google Play Services handles push notifications on Android.
iPhone Users – Fix WhatsApp Notifications
Enable Background App Refresh
Open Settings.
Then tap General.
Then tap Background App Refresh.
Enable WhatsApp.
Allow Notifications Fully
Open Settings.
Then tap Notifications.
Then tap WhatsApp.
Enable:
- Allow Notifications
- Lock Screen
- Notification Center
- Banners
- Sounds
Turn Off Focus Mode
Open Settings.
Then tap Focus.
Turn off any active mode.
Reinstall WhatsApp (Last Option)
Before uninstalling:
Open WhatsApp.
Then tap Settings.
Then tap Chats.
Then tap Chat Backup.
Back up your chats.
Then uninstall.
Then reinstall.
Then restore backup.
Only do this if all other steps fail.
Why WhatsApp Notifications Stop Working
WhatsApp depends on:
- Firebase Cloud Messaging on Android
- Apple Push Notification Service on iPhone
If your phone:
- Restricts background apps
- Blocks background data
- Uses aggressive battery saving
- Corrupts network profile
- Disables notification channels
Notifications stop working.
The problem is usually the phone system, not WhatsApp itself.
Frequently Asked Questions (FAQ)
Why are my WhatsApp notifications not showing until I open the app?
This usually happens because battery optimization or background restriction is enabled. Disable battery optimization and allow background data for WhatsApp.
Why is WhatsApp not giving sound notifications?
Check WhatsApp notification settings first. Then check your phone’s system notification sound settings. Also confirm your device is not on silent mode or Do Not Disturb.
Why do WhatsApp calls not ring?
Open your phone’s App settings, select WhatsApp, then select Notifications, and confirm that Call notifications are enabled. Also disable battery optimization.
Why are WhatsApp notifications delayed?
Delayed notifications are commonly caused by Data Saver mode, weak internet connection, restricted background activity, or aggressive battery saving features.
Why did WhatsApp notifications suddenly stop working?
This often happens after a system update changes background restrictions. Recheck battery optimization, autostart permission, and notification settings.
Does clearing WhatsApp cache delete messages?
No. Clearing cache does not delete your chats. Clearing data deletes chats, which is different. Only clear cache unless you have backed up your chats.
Why do notifications work on WiFi but not on mobile data?
Background mobile data may be disabled for WhatsApp. Enable unrestricted data usage inside WhatsApp app settings.
Can antivirus or cleaner apps block WhatsApp notifications?
Yes. Some security or optimization apps restrict background processes. Open those apps and whitelist WhatsApp.
Final Checklist Before You Leave
Confirm:
- Notifications are enabled inside WhatsApp
- System notifications are allowed
- Battery optimization is disabled
- Background data is enabled
- Autostart is enabled
- Focus mode is off
- Cache is cleared
In most cases, disabling battery optimization fixes the issue immediately.
