Samsung Galaxy S21

How to Fix If Your Galaxy S21 is Not Making Calls

Are you having trouble making calls from your Samsung Galaxy S21? Check this guide out!
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Being unable to make calls on a high-end smartphone like the Samsung Galaxy S21 can be a frustrating experience. This issue usually arises from SIM card problems, network provider issues, misconfigured network settings, and outdated device software. 

As long as the problem isn’t hardware-related, you can quickly and easily resolve this issue by following the fixes we have given below. Let’s start with the first fix.

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: Remove and Re Insert the SIM Card

Re-inserting the sim card

The first thing you should do to address this issue is remove and reinsert your SIM card. Although this is a simple thing, you can fix SIM card misplacement issues, network glitches, and other SIM card errors preventing your Galaxy S21 from making calls.

Here are the steps on how to properly remove and reinsert your SIM card:

  1. Power off your Galaxy S21.
  2. Locate the SIM card tray.
  3. Use the SIM card removal tool (or a small paperclip if you don’t have that) and push into the small hole and the SIM card tray should pop out.
  4. Remove the SIM card from the tray.
  5. Check the SIM card and tray for any visible signs of damage. If everything looks good, reinsert the SIM card into the tray (make sure it’s in the same orientation as before).
  6. Then reinsert the SIM card tray back into the device.
  7. Now Power up your Galaxy S21 and test if you can make calls.

Fix 02: Contact Network Provider

If your Galaxy S21 cannot make calls, it doesn’t mean the problem always lies with your smartphone, but rather with your network provider. 

Network providers also experience a range of issues such as service outages, technical glitches, or maintenance work that disrupts making and receiving calls.

To check if this is the case, you should get in touch with your network provider. You can do this by visiting their website or calling their customer service line, which can usually be found on your monthly bill or in the contract you signed when you joined the network.

When contacting them, ask if any known issues affect their services, particularly in your area. Also, inquire about the status of your account to ensure there are no issues or restrictions preventing you from making calls.

Fix 03: Reset Network Settings

As you may already know, all the network-related configurations, including cellular settings such as Access Point Names (APN), are stored under network settings. So if any of these settings are not correctly configured, it could prevent your device from making calls.

In such cases, Resetting network settings is the easy solution you can do. This restores all these configurations to their default settings. 

However, it’s important to note that doing a network reset will also remove all saved Wi-Fi networks and passwords from your device. So, make sure to note them down before proceeding with this step.

To reset network settings on your Galaxy S21:

  1. Go to Settings.
  2. Tap on General management.
  3. Then, tap on Reset option.
  4. Tap on Reset network settings.
  5. Confirm.

Once the process is complete, your network settings will restore to their factory defaults.

Fix 04: Clear the Phone App’s Data

It is also possible that the phone app (the app you use to make calls) prevents your Galaxy S21 from making calls. This is because the phone app is responsible for managing all your calls, and if its data gets corrupted or goes missing, it can prevent the device from performing its call function properly.

In this case, you can delete the phone app’s data and resolve the issue. However, before you proceed with this fix, you should back up your contacts, as there is a chance of getting them removed by clearing the phone app’s data.

That said, here’s how you can clear the phone app’s data:

  1. Go to Settings.
  2. Tap on Apps.
  3. Select Phone from the list.
Phone app
  1. Now go to Storage.
  2. Tap on Clear data.
Clear phone app data

Fix 05: Update Device Software

If you’ve recently updated your device and started experiencing this problem, the reason could be some bugs in the new software. In such cases, you can do another update to fix these bugs.

On the other hand, if you haven’t updated your device in a while, it’s possible that you’re missing out on important updates that could resolve this issue.

Updating your device software is easy. Here is how:

  1. Go to Settings.
  2. Tap on Battery and device care.
Battery and device care
  1. Tap on Software update.
Software update
  1. Then, tap on Download and install.
Download and install

Ensure your device is charged at least 70% and connected to a charger before you start installing the update.

Wrapping Up

In this guide, we’ve walked you through 5 solutions to address your issue of Galaxy S21 not making calls. So were you able to resolve the problem? Is there anything you need to know regarding this guide? Let us know by a comment.

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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