Version: Smart Feature Phone 3.0BluetoothGatt.onconnectionstatechangedDescription#Specifies an event listener to receive connectionstatechanged events. Those events occur when current connection state of GATT client to the remote device has changed.Syntax#instanceOfBluetoothGatt.onconnectionstatechanged = funcRefCopyWhere funcRef is a function to be called when the connectionstatechanged event occurs.