Nokia 103 - Manual (Page 9)

Use the headset
You can make a hands-free call with a
headset.
0123456789
calling
Silence
Connect a headset.
1
Calling
End call
0123456789
Make a call.
2
Save a name and number
Add a friend's number to your phone.
Menu Go to
12:30
Press Menu.
1
Select Exit
Messages
Press right.
2
9