Basic Fixes:

• Restart Samsung Galaxy phone: Rebooting your Samsung Galaxy phone is one of the effective ways to troubleshoot common problems. This will help fix any temporary glitches that might be causing issues with call recording.
• Turn off Wi-Fi: When you place calls over Wi-Fi, the Phone app might be unable to record such voice calls. The Phone app displays a greyed-out Record call option. You need to swipe down from the top to turn off Wi-Fi on your phone.
• Check the laws in your region: Samsung disables the call recording option in selected regions to comply with laws. If the Record call option isn’t showing up on your phone, it might be due to strict privacy laws in your region. If so, you won’t be able to record calls.
• Update One UI: Samsung updates the default apps via system software. You need to install the latest One UI to update the Phone app to the latest version and start recording calls as usual.

Fix 1: Enable Auto-Record Calls

If you record multiple calls, it is better to set your Samsung Galaxy phone to auto-record all calls instead of manually recording them every time. This will ensure all calls are recorded. Later on, delete any unwanted call recordings as required. Here’s how to do it.

Step 1: Open the Phone app and tap on Keypad. Tap the three-dot icon and tap on Settings.

Step 2: Tap on Record calls and turn on the Auto record calls toggle.

Fix 2: Manually Record the Call

If you want to record a call mid-way or if call recording initially failed, you can manually record the call even when the call is currently ongoing. Follow the below steps to do it.

Step 1: In the call window, tap the three-dot icon. Tap on Record call.

Also Read: How to fix call recorder not recording incoming voice on Android

Fix 3: Disable Wi-Fi Calling

The default Phone app prefers to place calls over a Wi-Fi network. You can’t record such calls unless you disable Wi-Fi on your Samsung phone. You can disable Wi-Fi calling to stop the behavior.

Step 1: Open Settings and tap on Connections. Disable the Wi-Fi Calling toggle.  

Fix 4: Use the Official Phone App

The call recording option is available on the default Phone app on Samsung Galaxy phones. So, if you use Truecaller or another third-party call app on your Samsung phone, the call recording option might not work properly. In this case, switch back to the default Phone app using the below steps.

Step 1: Open Settings and scroll to Apps. Tap Choose default apps.

Step 2: Tap the Phone app and select the default Phone app.

Also Read: How to fix call drop issue on Samsung Galaxy phones

Fix 5: Clear Phone App Cache

A corrupt app cache may be the reason behind the Record call option greyed-out problem on your Samsung phone. You need to clear the app cache and try again.

Step 1: Long-press the Phone app and tap the info menu. Select Storage. Tap Clear cache and Clear data.

Confirm if prompted. Then, restart the Phone app and try recording the relevant call to check if the issue has been fixed on your Samsung Galaxy phone.