How to Fix Galaxy S26 WhatsApp Calls Not Working After Update
If WhatsApp calls stopped working on your Galaxy S26 after an update, the issue is often tied to microphone permission changes, battery restrictions, notification handling, or a broken network handoff between Wi-Fi and mobile data.
These fixes apply whether voice calls fail to ring, connect, or stay stable on the Galaxy S26 series.
Fix #1: Confirm WhatsApp is updated
Open Google Play Store and install the newest WhatsApp version. App-specific calling bugs after a firmware update are commonly fixed quickly.
Fix #2: Check microphone and phone permissions
Go to Settings > Apps > WhatsApp > Permissions and make sure Microphone, Phone, and Notifications are allowed. Updates can revoke or reset app permissions.
Fix #3: Disable battery restrictions for WhatsApp
In Settings > Battery > Background usage limits, remove WhatsApp from sleeping or deep sleeping apps. VoIP calling apps often fail when Samsung background restrictions are too aggressive.
Fix #4: Turn Wi-Fi off and test on mobile data, then do the reverse
This tells you whether the problem is tied to one connection type. If calls only fail on Wi-Fi, reboot the router and check firewall or VPN settings.
Fix #5: Clear WhatsApp cache
Go to Settings > Apps > WhatsApp > Storage and tap Clear cache. This can resolve broken call initialization after an update.
Fix #6: Reset network settings
If both Wi-Fi and mobile data calling fail, reset network settings to clear a bad post-update network profile.
Fix #7: Check Do Not Disturb and notification categories
If incoming WhatsApp calls do not ring, make sure the call notification channel is enabled and not silenced.
Fix #8: Reinstall WhatsApp if backup is available
Back up chats first, then reinstall the app. This can repair damaged app components that survived the update.
Fix #9: Install the latest system patch
If the issue began immediately after a firmware update, Samsung may already have released a follow-up fix.
When to get more help
If the problem started immediately after the update and none of the software steps worked, back up your data and contact the device maker or carrier for deeper diagnostics. If one exact symptom keeps returning, it is often a sign that the update exposed a hardware weakness rather than creating the entire problem by itself.