How to Fix Galaxy S25 WhatsApp Calls Not Working After Update

If WhatsApp calls stopped working on your Galaxy S25 right after a software update, you are usually dealing with a permission reset, network routing glitch, battery restriction, or broken background activity for WhatsApp.

This guide focuses on the most effective fixes for Galaxy S25 WhatsApp calls not working after update, including both voice calls and video calls.

Fix #1: Confirm WhatsApp call permissions are still enabled

Open Settings > Apps > WhatsApp > Permissions and make sure Microphone, Camera, Contacts, and Notifications are allowed. Some updates silently reset one or more permissions, which can break incoming and outgoing WhatsApp calls.

Fix #2: Check if mobile data or Wi-Fi is actually stable

WhatsApp calls need a steady connection. Test a normal website, YouTube, or another messaging app first. If data is unstable, switch between Wi-Fi and mobile data, then try the call again. If the issue started with mobile data only, reset network settings from Settings > General management > Reset > Reset mobile network settings.

Fix #3: Turn off battery restrictions for WhatsApp

Go to Settings > Apps > WhatsApp > Battery and set it to Unrestricted or Optimized instead of Restricted. Then open Settings > Battery > Background usage limits and make sure WhatsApp is not inside Sleeping apps or Deep sleeping apps.

Fix #4: Clear the WhatsApp cache

Open Settings > Apps > WhatsApp > Storage and tap Clear cache. This will not delete chats, but it can remove broken cached call components left behind after an update.

Fix #5: Disable VPN, Private DNS, or call-blocking filters temporarily

If you use a VPN, ad blocker, firewall app, or custom Private DNS, turn it off for a few minutes and test again. These tools can interfere with WhatsApp voice routing after network settings change during an update.

Fix #6: Update WhatsApp in the Play Store

Open the Google Play Store and install any pending WhatsApp update. App developers often ship quick compatibility patches after a major Samsung update.

Fix #7: Reinstall WhatsApp if calls still fail

Back up your chats first, uninstall WhatsApp, restart the phone, and install the latest version again. Reinstallation can fix broken call services, notification channels, and account sync problems introduced by the update.

More Galaxy S25 help

If WhatsApp calls still do not work after all of the steps above, test your SIM and Wi-Fi on another device, then contact Samsung or WhatsApp support with the exact update build and call behavior.