AUTO ANSWER IN HANDS-FREE MODE
Calls automatically answered when I use earphones for hands-free option
Incoming calls are automatically picked-up and set to be answered whenever either the earphones
are plugged in or Bluetooth hands-free feature is activated.
Is Auto answer on? When it is activated, incoming calls will be automatically answered.
If yes, deactivate it.
How to fix
Go to Menu > Setting > Call > Auto Answer > Off
※ Menu and features may vary by product.