How do I activate or deactivate the second call service?
To activate the service “second call”, enter *43# on your mobile phone, followed by the send or OK button.
To deactivate the service, enter #43#, followed by the send or OK button.
To activate the service “second call”, enter *43# on your mobile phone, followed by the send or OK button.
To deactivate the service, enter #43#, followed by the send or OK button.