Samsung SGH-X105NBATMB - Manual (Page 109)

Solving Problem s
106
The audio quality of the call is poor
Check the signal strength indicator in the display ( );
the number of bars indicates the signal strength from
strong (
) to weak ( ).
Try moving the phone slightly or moving closer to a window
if you are in a building.
No number is dialed when you recall a phonebook
entry
Check that the numbers have been stored correctly, by
using the Phonebook Search feature.
Re-store the number, if necessary.
If the above guidelines do not enable you to solve the
problem, take a note of:
The model and serial numbers of your phone
Your warranty details
A clear description of the problem
Then contact your local dealer or Samsung after-sales
service.