User's Manual

90
Troubleshooting
▶ Cannot turn on by pressing (Power)
•Do you hold down (Power)? (▶P.13)
•Is the battery pack charged? (▶P.10)
•Is the battery pack properly inserted? (▶P.9)
•Are the contacts on the battery pack dirty?
▶ The power is turned off automatically
•Has the battery run out? (▶P.10)
▶ The power is turned off at the startup screen
•Has the battery run out? (▶P.10)
▶ Cannot make any phone calls
•Is your IS11PT turned on? (▶P.13)
•Is the au IC-Card inserted? (▶P.11)
•Is the phone number you entered correct? (Did
you start with the area code first?) (▶P.34)
•Did you tap after entering the phone number?
(▶P.34)
•Is your IS11PT in airplane mode? (▶P.14)
▶ Cannot receive any phone calls
•Do you have sufficient signal strength?
(▶P.5)
•Are you outside the service area? (▶P.5)
•Is your IS11PT turned on? (▶P.13)
•Is the au IC-Card inserted? (▶P.11)
•Is your IS11PT in airplane mode? (▶P.14)
▶ (Out of Area) appears
•Are you outside the service area or in a location
with poor signal strength? (▶P.5)
•Are you covering the built-in antenna with your
fingers or hand? (▶P.7)
▶ Cannot connect to Wi-Fi
•Is your IS11PT receiving a signal from the
wireless access point?
•Did you configure your Wi-Fi settings? (▶P.66)
▶ The LED lamp ashes but I cannot hear any
ringtone
•Is your IS11PT in manner mode? (▶P.14)
▶ Cannot charge the battery pack
•Is the charger connected properly? (▶P.10)
•Is the battery pack properly inserted? (▶P.9)
▶ Cannot perform any key/touch panel operations
•Is your IS11PT turned on? (▶P.13)
•Did you unlock the screen? (▶P.20)
▶ “au IC-Card (UIM) error” is displayed
•Is the au IC-Card inserted? (▶P.11)
•Is a card different from the au IC-Card used?