GreatCall Jitterbug Manual page 145

Please ensure you turn off your Bluetooth if you wish to receive calls
from your Jitterbug handset and not your Bluetooth headset. You are
unable to turn off your Bluetooth while on a call.
When your Bluetooth is on and available for
your use, you will notice a white Bluetooth
icon, similar to the one on the right, appear
at the top right corner of your Main Screen.
Bluetooth 135