Bluetooth call audio disconnects automatically after call starts (A52s – One UI)

[Abdelrahman1309]

After the latest One UI 6.1 update on my Samsung Galaxy A52s, I’ve been facing a recurring issue with Bluetooth call audio.

When I connect my phone to any Bluetooth device that supports calls (car system, smartwatch, or earbuds), music and media audio work perfectly.

However, whenever I start or receive a phone call, the audio automatically switches from the Bluetooth device back to the phone’s internal speaker.

When I manually tap the “Bluetooth” button during the call, it turns green for a second, plays a short beep sound, then immediately disconnects again — the call never stays on Bluetooth audio.

I already tried the following steps, but the issue persists until I reset network settings:

Unpaired and re-paired all Bluetooth devices

Cleared Bluetooth cache and data (not visible under Apps list)

Disabled battery optimization for Bluetooth

Restarted and updated all system apps

After performing a Network Settings Reset, the problem temporarily disappeared — but I’m worried it will return after some time or future updates.

It seems like a Bluetooth HFP (Hands-Free Profile) routing issue that affects all call-related Bluetooth devices.

[SamsungModerator4]

Hello. I’m Aya, Samsung Moderator
Thank you for asking the question
We wish you a happy day
Based on your inquiry regarding

1- Ensure the device has not been dropped or exposed to any liquid.
2- Restart the device and then try Bluetooth again.
3- Test the device on another device, at most 10 meters away.
4- Ensure Bluetooth is enabled and the device visibility is enabled.
5- *#7353# Perform a Bluetooth test by dialing

Settings - General Management - Reset - Reset All Settings

If you're still experiencing the same issue, we recommend performing a factory reset to resolve it by following these steps:

Open the Settings app, then tap General Management → Reset → Factory Reset → Reset → Delete All.

Make sure you've backed up all user data using Smart Switch from the link below, then use the backup tool to create a data backup.

http://www.samsung.com/eg/support/smartswitch/

If the issue isn't resolved, you can honor us by visiting the nearest service center to diagnose the device and resolve the issue.
You can send us your city and residential area so we can send you the nearest service center.
Or you can follow the link below to find the nearest center:
http://www.samsung.com/eg/support/servicelocation

Please allow us to activate maintenance mode before bringing the device to a service center.

To protect your personal data:
Maintenance mode protects your privacy while someone else is using your phone, such as when you send it in for repair. This feature prevents access to personal data on the device. In maintenance mode, your personal data, including photos, messages, and accounts, cannot be accessed, and only pre-installed apps are available.
To activate maintenance mode:
First, you'll need to unlock your phone to turn off maintenance mode.
Second, go to Settings > Device care > Maintenance mode > Activate.

If you have any other question, can you explain it to us

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Thanks for your time