Samsung Galaxy S21

Samsung S21 Bluetooth Keeps Disconnecting – How to Fix

Bluetooth devices keep disconnecting from your Galaxy S21? Check this guide out!
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For a flagship device like Samsung Galaxy S21, seamless connectivity is a part of the premium experience that users expect when they invest in such a high-end device, and one of the most important connections is Bluetooth, which allows you to connect your device to a range of other devices, from headphones and speakers to smartwatches and even your car.

Unfortunately, some users have reported Bluetooth devices connected to their Samsung Galaxy S21 keep disconnecting. According to them, it even happens in the middle of a call or listening to music. 

If you’re one of those users experiencing this problem, don’t worry!

Because in this guide, we’ll walk you through 6 troubleshooting steps that you can apply to fix this issue. We have explained each fix in detail so you can follow along easily. 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.

Fix 01: Restart Your Galaxy S21 and Connect the Device Again

Restarting your Samsung Galaxy S21 helps to rule out minor software glitches that could be causing your Bluetooth device to disconnect frequently. If you haven’t tried this already, follow the steps below to restart your device.:

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

Once your device has restarted, connect your Bluetooth device again and see if the problem has been resolved.

Fix 02: Pair the Bluetooth Device Again

The issue with Bluetooth disconnecting on your Samsung Galaxy S21 could be due to a problem with the pairing process. Pairing is the process of creating a secure connection between two Bluetooth devices, so if the pairing process was not completed correctly, or if there is an error in the pairing information, this could cause your Bluetooth device to keep disconnecting.

To resolve the problem in such cases, you need to unpair and then re-pair the Bluetooth device. Here’s how you can do this:

  1. Go to Settings.
  2. Tap on Connections.
  3. Tap on Bluetooth.
Connections - bluetooth
  1. You will see a list of paired devices. Find the device that you’re having trouble with, then tap on the gear icon next to it.
Paired bluetooth devices
  1. Tap on Unpair.
Unpair bluetooth device
  1. Once the device has been unpaired, pair it again.

Fix 03: Clear Bluetooth App Data

The Bluetooth service, or the Bluetooth app, is the backbone of all Bluetooth connections on your Samsung Galaxy S21. It manages the pairing, connection, and communication between your device and all Bluetooth-enabled devices it interacts with. 

Over time, the data generated by this service can become corrupted or outdated, and lead to various Bluetooth issues, like the disconnection problem you’re facing.

In this case, you can easily clear the Bluetooth app data to fix this. Here’s how to do it:

  1. Go to Settings.
  2. Tap on Apps.
  3. Toggle on “Show system apps”.
Show system apps
  1. Select Bluetooth.
Bluetooth app
  1. Go to Storage.
Bluetooth app storage settings
  1. Tap on Clear data.
Clear bluetooth cache

After clearing the data, restart your Galaxy S21 and connect your Bluetooth device again. This process removes all previous pairings and Bluetooth settings, so you’ll need to pair your device again as if it’s the first time.

Fix 04: Update Device Software

Updating your Samsung Galaxy S21’s software could fix the Bluetooth disconnection issue. This is because software updates come with bug fixes that can replace any faulty system files and fix any existing problems, including Bluetooth connectivity issues.

Follow the steps below to update your device software:

  1. Head over 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

After the update is complete, try connecting your Bluetooth device again to see if the problem is resolved.

Fix 05: Turn Off Android Auto Wireless Sync

This may seem non-related but sometimes, the wireless sync feature on Android Auto can interfere with the Bluetooth connection on your Samsung Galaxy S21 and cause it to disconnect frequently. 

This is because Android Auto is designed to automatically connect with your car’s system using Bluetooth, and this can sometimes conflict with other Bluetooth connections.

If you’re not actively using Android Auto, it’s a good idea to turn off this feature to see if it resolves your issue. Here’s how you can do it:

  1. Open the Android Auto app on your Samsung Galaxy S21.
  2. Tap on the menu icon (three horizontal lines) in the top left corner.
  3. From the menu that appears, select Settings.
  4. In the Settings menu, scroll down to the Wireless and networks section.
  5. Tap on Wireless Android Auto.
  6. Toggle off the switch next to Enable wireless sync.

After you’ve turned off the wireless sync feature, try connecting your Bluetooth device again to see if the problem has been resolved. If your Bluetooth connection remains stable, then the issue was likely due to a conflict with Android Auto’s wireless sync feature.

Fix 06: Try Connecting Another Device

If your Bluetooth device still keeps disconnecting from your Galaxy S21 connect another Bluetooth device to your phone if possible. This method helps you determine if the problem lies within your phone or the Bluetooth device you’re trying to connect.

After successfully connecting the other device, observe if it also disconnects frequently. If it stays connected, the problem is with the original Bluetooth device you were trying to connect.

In this case, you need to either repair the Bluetooth device or replace it with a new one to fix the problem.

Wrapping Up

That’s it! We hope that one of these solutions has resolved your issue. However, if you’re still experiencing problems, it might be worth reaching out to Samsung’s customer support for further assistance.

Also, if you have any questions or need further clarification on any of the fixes we have mentioned in this guide, feel free to drop your queries in the comment section below. We will be there to assist you!

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Content writer and Web developer at and he is the big brain behind the technical aspects of this tech blog.

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