User's Manual
79
Appendix/Index
▶I hear a beeping sound and cannot make any
phone calls
• Are you outside the service area or in a location
with poor signal strength? (▶P.5)
• Either the network is very busy, or the person you
are trying to call is already on the phone.
▶Cannot hear the other person on the line
•
Is your receiver volume turned all the way down?
(▶P.37)
• Are you covering up the receiver with your ear?
Place the receiver to your ear.
▶The microSD memory card is not recognized
•
Is the micr
oSD memory card inserted properly?
(▶P.12)
• Is the microSD memory card unmounted?
■
For more detailed information, see au Customer
Support on the au homepage at the following URL.
http://www.kddi.com/customer/service/au/
trouble/kosho/index.html