Samsung Galaxy S21

WiFi Calling is Not Working on Samsung S21 – How to Fix

If WiFi calling is not working on your Galaxy S21, follow the fixes in this guide to fix the issue.
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WiFi calling allows you to make and receive calls over a WiFi network instead of using the traditional mobile network. This can be extremely useful in areas with poor cellular reception. 

However, Samsung Galaxy S21 users have reported on platforms such as the Samsung community and Reddit, that they are unable to make or receive WiFi calls. According to our research, the reasons for this issue are software glitches and network problems.

In this guide, we will explain the solutions you can apply to this issue with step-by-step instructions. Let’s get started!

Note: Solutions in this guide will work on any Samsung Galaxy S21 model (S21, S21 Plus, S21 Fe, and S21 Ultra models.) 

Editor’s note: We created these instructions using a Samsung Galaxy S21 running Android 13. Depending on your device’s software version, some steps and menu positions may look slightly different.

In a hurry? Watch the video!

Fix 01: Refresh WiFi Calling

This can be done by turning off the WiFi calling feature and then turning it back on. This will reset any temporary software glitches that might be causing the WiFi calling feature to malfunction.

Here are the steps you need to follow:

  1. Open the Phone app.
  2. Tap on the Three-dot located at the top-right corner of the screen.
  3. From the drop-down menu, select Settings.
Call settings
  1. Now, toggle the switch to turn off WiFi calling.
  2. Wait for a few seconds, then toggle the switch back on to turn on WiFi calling.
Wifi calling

Fix 02: Restart the WiFi

Restart the router

A simple glitch in the WiFi connection between your router and your Samsung Galaxy S21 could also be the culprit behind the WiFi calling issue. These kinds of glitches usually cause the WiFi connection to interrupt. 

In such instances, a restart of both your WiFi router and your device will resolve the issue.

To restart your WiFi router, follow these steps:

  1. Locate your WiFi route’s power button.
  2. Press the power button to turn off the router. Wait for all the lights on the router to go off.
  3. Wait for about a minute. This allows the router to fully power down and clear its memory.
  4. Then, press the power button again to turn the router back on.

To restart your Samsung Galaxy S21, follow these steps:

  1. Press and hold the power key and volume down key together until you get the power menu.
Force restart samsung
  1. Tap on the restart button.
Restart phone
  1. Confirm the selection by tapping on the restarting button again.

Fix 03: Set WiFi Calling as WiFi Preferred

WiFi calling preferred is a setting that prioritizes making calls over a WiFi network rather than the cellular network. This can be beneficial when you’re in an area with a weak cellular signal but have access to a strong WiFi connection.

Also, your Samsung Galaxy S21 may not switch to WiFi calling even when it’s enabled due to the network preferences set on your device. If your device is set to prefer cellular networks for calls, it might overlook the WiFi calling feature, leading to the issue at hand.

Switching the preference to WiFi calling will resolve the problem. Here’s how you can adjust this setting on your Galaxy S21:

  1. Swipe down the top of the screen to get the Notification panel.
  2. Tap and hold on the WiFi calling button.
  3. On the menu, select WiFi preferred.
Switching to wi-fi preferred in wifi calling

By doing this, your device will prioritize WiFi networks for making calls whenever available. Once you have made the change, restart your device to apply the changes.

Fix 04: Contact Network Provider For Service Outage

Contact the network provider

If there is a service outage with your network provider, it will prevent you from using WiFi calling.

Therefore, before going to the last solution, contact your carrier and explain the issue in detail. Also mention the fixes you’ve already taken. This will help customer support to understand your issue better and provide the best solution possible.

Fix 05: Reset Network Settings

If everything is okay with the network provider, then you can proceed to Reset network settings. This will erase all the manual configurations made to all network-related settings, including WiFi connections as well as WiFi calling. 

Once you have done this, you can connect to WiFi again and start using the WiFi calling without any issues. 

Here’s how to reset network settings:

  1. Open the Settings.
  2. Scroll down and tap on General management.
  3. Tap on Reset.
Reset option samsung
  1. Now, tap on Reset network settings.
Reset network settings
  1. Tap on Reset to confirm.

After the process is completed, your phone will restart. Once it’s back on, reconnect to your WiFi network. Then, try making a WiFi call.

Wrapping Up

We understand how frustrating it can be when a feature you need the most doesn’t work. That is why we did research on this issue and made this guide to help you. So which solution worked for you? Don’t forget to leave us a feedback in the comment section.

Also, if you have any questions or need help regarding this guide, feel free to leave a comment below. We will be there to assist you.

Have a nice day!

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The founder of and the tech nerd of the team. He is specialized in Android/iOS development and web development.

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