Go to Bluetooth settings and find your headset. Uncheck Phone to disable the headset from being used for voice calls.
How to Disable Making Calls When Device is Locked (Bluetooth Headset is Connected)
When you have a Bluetooth headset connected to your Android device, making calls is allowed by default even if the phone is locked. To disable making calls when device is locked and connected to a BT headset, do as follows:
1. Open Phone application
2. Go to call settings, by pressing Menu Button and then selecting Settings
3. Tap Call Accessories
4. Tap Outgoing call conditions, and select Only when device unlocked
3 comments
Go to the Bluetooth settings of your device, and look for your headset. Uncheck the phone box to disable your headset from being used for phone calls.
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