How to Fix WhatsApp Notifications Not Working on Android and iPhone?
If WhatsApp messages only arrive in a burst when you open the app, or call and message alerts stay silent until you unlock the phone, the system is usually holding WhatsApp back in the background. In some cases, your contacts may also keep seeing one tick until the app finally wakes up.
- On Android, the usual culprits are notification categories, battery limits, and background-data restrictions.
- On iPhone, it is more often tied to notification permission, Background App Refresh, and stale app state after a recent update or changes to linked devices and privacy settings.
If notifications only appear when you open WhatsApp, start with Method 3 on Android or Method 4 on iPhone. If messages arrive but stay silent, start with Method 1 or Method 2.
If the whole phone is unusually quiet, make sure Do Not Disturb, Focus, your ring mode, or the iPhone mute switch are not the real blocker.
1. On Android, Change WhatsApp Notification Categories from Silent to Alerting
When WhatsApp still receives the message but Android gives you no sound, no banner, or only a badge, one notification category is usually muted.
Android can keep the main WhatsApp notifications switch on while individual categories such as Message notifications or Group notifications are still set to Silent. On older Android versions, you may still see these referred to as notification channels.
Changing those categories back to Alerting forces Android to treat WhatsApp as an interruptive notification again instead of a silent one.
If alerts arrive normally once the phone wakes and your real problem is delay after idle time, go to Method 3 instead.
- Open Settings > Apps > WhatsApp > Notifications.
The main toggle can stay on while a specific WhatsApp category is still silent. - Set those categories to Alerting or Default instead of Silent.
- Make sure All WhatsApp notifications is enabled, then open the categories for Message notifications and Group notifications.
Message and group channels should be set to alerting if you expect banners, vibration, or sound. - If you use Samsung, also turn on Show as pop-up for the important WhatsApp categories.
- Open WhatsApp > Settings > Notifications and confirm that message and group alerts are still enabled inside the app.
If the next test message gives you a normal banner or sound again, the Android alert path was muted at category level. If Android still delivers messages only after the app wakes up, continue to Method 3.
2. On iPhone, Restore WhatsApp Banner, Sound, and Lock Screen Alerts
When WhatsApp reaches the iPhone but shows only a badge, arrives quietly, or never appears on the Lock Screen, the missing piece is usually one alert type rather than the app itself.
On iPhone, the break is often simple: the app permission exists, but one of the actual alert types such as Banners, Sounds, or Lock Screen is still off. WhatsApp’s own in-app alert settings can then make it look even more inconsistent.
Restoring those switches lets iPhone surface WhatsApp as a real alert again, which is why badge-only behavior usually disappears once the right alert surfaces are turned back on.
Do not use this if banners and sounds are already configured correctly and the real pattern is delayed delivery on a locked phone. Method 4 is the better fit there.
- Open Settings > Notifications > WhatsApp.
iPhone can allow the app itself while still blocking the exact banner or sound path you expect.
- Turn on Allow Notifications, then enable Lock Screen, Notification Center, Banners, Sounds, and Badges.
After the iPhone permission layer is fixed, confirm WhatsApp has not muted its own alert behavior.
- Open WhatsApp > Settings > Notifications and make sure message and group notifications are still enabled there too.
- If you recently changed custom WhatsApp sounds or previews, reset those in-app notification choices once and test a fresh message.
If the next incoming message appears on the Lock Screen or as a banner again, the iPhone alert layer was the blocker. If messages still arrive only after you open WhatsApp, continue to Method 4.
3. On Android, Remove Battery and Data Restrictions from WhatsApp
Late WhatsApp alerts on Android usually mean the system is holding the app too aggressively in the background.
The message itself is not failing here. Android is often parking WhatsApp so deeply through battery optimization or data-saving rules that the app does not process the incoming alert until the phone wakes it up again.
Removing those restrictions gives WhatsApp the green light to fetch messages immediately instead of waiting for the next foreground event.
Do not use this if banners were missing even while the app stayed active. That problem is usually closer to Method 1.
- Open Settings > Apps > WhatsApp > App battery usage or the closest battery page for WhatsApp on your phone.
- Turn on Allow background usage and choose Unrestricted if your device offers that option.
Allow unrestricted battery use for WhatsApp
- If you use a Pixel or stock Android, search for Adaptive Battery and turn it off for one test cycle.
This is worth testing when alerts arrive late after the phone has been idle.
- Remove WhatsApp from any Sleeping apps, Deep sleeping apps, or OEM battery saver lists.
- Open Settings > Network & Internet > Data Saver and allow WhatsApp to use background or unrestricted data.
Background-data restrictions can delay message delivery until you reopen the app.
end a test message while the screen is off. If the alert arrives immediately without opening WhatsApp, keep those Android background allowances in place.
If the delay still survives all of them, continue to Method 5 or Method 6 depending on your pattern.
4. On iPhone, Restore Background Delivery for WhatsApp
On iPhone, alerts that arrive only after you wake the phone or reopen the app usually mean the notification is being held back before WhatsApp can refresh in the background.
The common causes are Low Power Mode, disabled Background App Refresh, blocked mobile data, or a stale app-lock state after a recent change. None of those usually remove the app completely; they just make background delivery unreliable.
Putting those background paths back in place helps because WhatsApp can refresh and surface the alert before you manually open it. A glitch in the Face ID or app-lock requirement can also contribute here, which is why that toggle is worth testing later in this method.
Do not use this if the phone is already active and the only thing missing is the banner or sound. In that case, go back to Method 2 instead.
- Open Settings > Battery and turn off Low Power Mode.
Low Power Mode can hold back background delivery enough to make WhatsApp feel silent. - Open Settings > General > Background App Refresh, set it to Wi-Fi & Cellular Data, and make sure WhatsApp is enabled in the app list.
When messages only arrive after opening the app, this is one of the first iPhone checks that matters. - Open Settings > Cellular and confirm that WhatsApp is allowed to use mobile data.
- If this started right after enabling Face ID or app lock for WhatsApp, turn that lock off once, test one fresh message, then turn it back on if notifications recover.
- Restart the iPhone and test a new incoming message while the phone is locked.
If the message now arrives while the iPhone is locked, background delivery was the missing piece. If the phone still stays silent but linked devices continue to alert, continue to Method 5.
5. Log Out Linked Devices and Test the Phone Alone
This is worth trying when WhatsApp Web, Desktop, or a linked Mac still gets alerts, but the phone itself does not. It also fits when notifications broke soon after you relinked another device.
A stale linked-device session should not permanently kill phone alerts, but it can leave the app in a strange state where desktop stays current while the phone-side session behaves badly.
Logging those sessions out helps because it forces the phone to stand on its own again and makes it much easier to tell whether the broken state was tied to linked-device sync.
This is not needed if you never use linked devices at all. Stale session sync is much less likely in that case.
- Open WhatsApp > Settings > Linked Devices.
A stale desktop or web session is worth removing when phone alerts stop but linked-device alerts still work. - Log out every desktop, web, Mac, or tablet session you do not actively need for this test.
- Close WhatsApp fully, restart the phone once, and send a fresh message from another WhatsApp account.
- If phone notifications recover, relink your desktop or web session later and test one more message.
If the phone starts alerting again before you relink anything, the stale linked session was part of the problem. If relinking immediately breaks notifications again, leave that device logged out until WhatsApp updates. If nothing changes, continue to Method 6.
6. Update WhatsApp, Then Reinstall It After a Backup
Use this last when the settings look correct but WhatsApp still refuses to register alerts properly. At this point, the most likely break is stale local app state or a bad push-notification registration that survived the earlier fixes.
Reinstalling helps because it forces WhatsApp to rebuild local data, refresh its push-notification registration, and request notification access again. It is also one of the few fixes that can clear bad state after an app update or linked-device problem.
Use this only after the platform-specific methods above. If your work or school profile manages app notifications, background data, or VPN behavior, policy rules can override everything here until the admin changes them.
- Important: Open WhatsApp > Settings > Chats > Chat Backup and run a fresh backup first so you do not lose recent messages.
Run a fresh backup first so a clean reinstall does not cost you recent chat history. - Open the App Store or Play Store and install any available WhatsApp update.
A buggy app build can break push registration even when your settings still look correct. - If the issue started right after an iPhone or Android update, install any pending OS patch and restart the phone once.
- If notifications are still broken, uninstall WhatsApp and reinstall it from the official store.
- Open WhatsApp, allow notifications when prompted, restore your backup, and test a brand-new incoming message.
If WhatsApp still stays silent after a clean reinstall, treat it as an app-build, account, managed-device policy, or VPN/profile edge case rather than a simple settings miss.
If WhatsApp is also crashing, refusing to open, or failing before you can test notifications properly, start with this guide for when WhatsApp is not opening or working at all.
If every app on your iPhone is missing alerts, use this broader iPhone notifications guide instead.
