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WhatsApp calls have become one of the easiest ways to stay connected with friends, family, and work contacts. That is why it can be frustrating when WhatsApp calls suddenly stop working. Sometimes the call does not connect, sometimes it keeps showing calling, and in other cases you can connect but cannot hear the other person.
I have experienced these kinds of WhatsApp call problems, and from my experience, the cause is usually something simple such as an unstable internet connection, missing permissions, outdated WhatsApp, microphone problems, or a temporary issue with the phone.
The good thing is that you do not usually need advanced technical knowledge to fix it. In this guide, I will explain the most common reasons why WhatsApp calls are not working and show you step by step solutions that you can try on Android and iPhone.
Why Are WhatsApp Calls Not Working?
WhatsApp voice and video calls require a stable internet connection and permission to use certain features on your phone. If your WiFi or mobile data is unstable, WhatsApp may not be able to establish a call properly.
Other possible reasons include disabled microphone permissions, battery saving restrictions, outdated app versions, incorrect phone settings, VPN interference, background data restrictions, or temporary WhatsApp service problems.
The first thing I recommend is not to change several settings at once. Try the basic solutions first and then move toward the advanced fixes if the problem continues.
1. Check Your Internet Connection
A weak internet connection is one of the most common reasons for WhatsApp calls not working.
Open your browser and try visiting a few websites. You can also open another app that requires an internet connection.
If websites are loading slowly or not opening at all, your internet connection may be the real problem.
If you are using WiFi, move closer to your router and try the call again. You can also restart your router.
If you are using mobile data, turn mobile data off and then turn it back on.
Another useful test is switching from WiFi to mobile data or from mobile data to WiFi. If WhatsApp calls work on one connection but not the other, you have a good indication that the network is causing the problem.
2. Restart Your Phone
This may sound too simple, but restarting your phone can fix temporary problems with WhatsApp and the network.
Close WhatsApp and restart your Android phone or iPhone.
After the phone starts again, open WhatsApp and make another call.
A restart clears temporary background processes and allows network and audio services to start again.
I normally recommend trying this before changing complicated settings because it takes less than a minute.
3. Check WhatsApp Microphone Permission
If your WhatsApp call connects but the other person cannot hear you, microphone permission should be one of the first things you check.
On Android, open Settings, go to Apps, select WhatsApp, and open Permissions. Make sure the microphone permission is allowed.
On iPhone, open Settings, find WhatsApp, and make sure the Microphone option is enabled.
Without microphone access, WhatsApp cannot transmit your voice during a call.
After changing the permission, completely close WhatsApp and open it again.
4. Check Camera Permission for Video Calls
If voice calls work but WhatsApp video calls are not working, check camera permissions.
On Android, open WhatsApp’s app permissions and make sure camera access is allowed.
On iPhone, open Settings, select WhatsApp, and enable Camera.
You should also check whether another application is currently using your camera. Close other apps and try the WhatsApp video call again.
5. Update WhatsApp
An outdated WhatsApp version can sometimes cause calling problems.
Open the Google Play Store on Android or the App Store on iPhone and search for WhatsApp.
If an update is available, install it.
App updates often include bug fixes, performance improvements, and compatibility changes. If your WhatsApp version is old, updating it is one of the easiest solutions to try.
After updating, restart WhatsApp and make another call.
6. Turn Off Battery Saver
Battery saving features can restrict WhatsApp from running normally in the background.
This can sometimes affect notifications and incoming calls.
On Android, open your battery settings and check whether WhatsApp is restricted by battery optimization.
Try allowing WhatsApp to run normally in the background.
On iPhone, you can also check whether Low Power Mode is affecting normal app activity.
After changing the setting, open WhatsApp again and test the call.
7. Allow WhatsApp to Use Background Data
If WhatsApp calls work while the app is open but incoming calls or notifications do not work correctly, background data restrictions may be responsible.
On Android, open WhatsApp’s mobile data settings and make sure background data is allowed.
You should also check whether Data Saver is enabled. If it is, WhatsApp may have restricted access depending on your settings.
On iPhone, check the cellular data settings and make sure WhatsApp is allowed to use mobile data if you want to make calls without WiFi.
8. Disable VPN Temporarily
A VPN can change how your internet traffic is routed.
In some situations, this can interfere with WhatsApp calls or make the connection unstable.
If you are using a VPN, disconnect it temporarily and try making a WhatsApp call.
If the call starts working after disabling the VPN, the VPN connection may be responsible.
You can then check the VPN settings, change the server location, update the VPN application, or contact the VPN provider for support.
9. Turn Airplane Mode On and Off
Another quick network reset is using Airplane Mode.
Turn Airplane Mode on and wait for around 10 seconds. Then turn it off again.
This forces the phone to reconnect to cellular and wireless networks.
After the connection returns, open WhatsApp and try the call again.
This simple trick can sometimes fix temporary mobile network problems without restarting the entire phone.
10. Clear WhatsApp Cache on Android
If you use Android, clearing the WhatsApp cache can help when the app behaves strangely.
Open Settings, go to Apps, select WhatsApp, and open Storage.
Look for the option to clear the cache.
Be careful not to select options that delete your app data unless you have a backup and understand what you are doing.
Clearing the cache removes temporary files while keeping your WhatsApp account and conversations intact in normal circumstances.
After clearing the cache, open WhatsApp and test the call.
iPhone does not provide the same general cache clearing option, so on iPhone you may need to use other troubleshooting methods.
11. Check Your Phone’s Microphone
Sometimes WhatsApp is not the problem at all.
Your phone microphone may be blocked, dirty, or malfunctioning.
Open the phone’s built in voice recorder and record a short message.
Play it back and listen to the recording.
If your voice sounds normal, the microphone is probably working.
If the recording has no sound or sounds extremely unclear, you may have a hardware or system problem.
Also check whether your phone case is covering the microphone openings.
12. Check Your Speaker and Volume
If the other person can hear you but you cannot hear them, check your phone’s volume.
During a WhatsApp call, press the volume up button several times.
Make sure the phone is not connected to Bluetooth headphones, a car audio system, or another Bluetooth device.
You can temporarily turn Bluetooth off and test the call again.
If you can hear the other person after disconnecting Bluetooth, the audio was probably being routed to another device.
13. Try Another Network
If WhatsApp calls are not working on your current WiFi, try a different connection.
For example, disconnect from WiFi and use mobile data.
If the call works on mobile data, your WiFi network or router may be causing the issue.
You can also connect to another WiFi network if one is available.
This is one of the best troubleshooting methods because it helps determine whether the problem is with your phone or your internet connection.
14. Restart Your Router
If WhatsApp calls are failing only on your home WiFi, restart your router.
Turn the router off, unplug it, wait around 30 seconds, and plug it back in.
Wait until the internet connection is restored and then test WhatsApp again.
If other apps and websites are also experiencing connection problems, the router or internet service may need further troubleshooting.
15. Check WhatsApp’s Call Settings
WhatsApp includes settings that can affect how calls use your network.
Open WhatsApp and go to Settings, then Storage and Data.
Look through the available network and call related options.
If you have enabled settings designed to reduce data usage for calls, you can test whether disabling them improves call quality.
This can be particularly useful if your internet connection is already slow.
16. Reinstall WhatsApp
If nothing else works, reinstalling WhatsApp can resolve problems caused by damaged app files.
Before uninstalling WhatsApp, make sure your important chats and media are backed up properly.
After confirming your backup, uninstall WhatsApp and download the latest version from the official app store.
Install the application, verify your phone number, and restore your backup if prompted.
Then test both voice and video calls.
I recommend keeping this as one of the later solutions because reinstalling an app takes more time than the basic troubleshooting methods.
What If WhatsApp Calls Work for Everyone Except One Contact?
If you can call other people normally but cannot call one specific contact, the problem may not be on your phone.
Ask that person to check their internet connection, WhatsApp version, permissions, and phone settings.
It is useful to test calls with multiple contacts because this can quickly tell you whether the problem is specific to one connection or affects WhatsApp generally.
What If WhatsApp Calls Suddenly Stop Working?
Sometimes WhatsApp itself can experience temporary service problems.
If your internet works normally, your microphone works, your permissions are correct, and WhatsApp is updated, the problem may be temporary.
You can wait a little and try again later.
It is also useful to check whether other WhatsApp features such as messaging and media sharing are working normally.
If everything stops working at the same time, a service issue becomes more likely.
Final Thoughts
When WhatsApp calls are not working, I recommend starting with the simplest solutions instead of immediately reinstalling the app.
First check your internet connection, restart your phone, verify microphone and camera permissions, and make sure WhatsApp is updated. Then test another network and temporarily disable VPN or battery saving features if you use them.
If you are on Android, clearing the WhatsApp cache can also help. For audio problems, test your phone microphone and speaker separately so you can determine whether the problem comes from WhatsApp or the device itself.
If WhatsApp calls work on mobile data but not WiFi, focus on your router and internet connection. If they fail everywhere but other apps work normally, focus on WhatsApp permissions, application settings, and the app installation.
In my experience, the key is to test one thing at a time. Once you know whether the problem is caused by the internet, phone settings, WhatsApp, or the device hardware, finding the right solution becomes much easier.
With the solutions in this complete guide, you should be able to troubleshoot most common WhatsApp call problems and get voice or video calling working again.
