User's Manual

145Questions & Answers
right page (145) of EF81 KESTREL FCC us-en, (31.01.2006, 10:24)
© BenQ Mobile 2006, Z:\EF81_KESTREL_1\output\FUG\KESTREL_FCC_us-en_060126_te_druck\Kestrel_FAQ.fm
Template: X75, Version 2.2;VAR Language: en; VAR issue date: 051116
Charging error
(charge icon not
displayed).
Battery totally discharged. 1) Plug in charger cable, battery is on charge.
2) Charge icon appears after approx. 2 hours.
3) Charge battery.
Temperature out of range:
+5 °C to +45 °C.
Make sure the ambient temperature is right, wait for
a while, then recharge.
Contact problem Check power supply and connection to the phone.
Check battery contacts and phone connection
socket, clean them if necessary, then insert battery
again.
No mains voltage. Use different mains power socket, check
mains voltage.
Wrong charger. Only use original accessories.
Battery faulty. Replace battery.
SIM error. SIM card not inserted correctly. Check that the SIM card is inserted correctly
(page 20).
Dirty SIM card contacts. Clean SIM card with a dry cloth.
SIM card with wrong voltage. Use 3.0/1.8V SIM cards only.
SIM card damaged
(e.g. broken).
Carry out a visual check. Change SIM card at
service provider.
No network
connection.
Weak signal. Move higher, to a window or an open space.
Outside GSM/UMTS range. Check service provider's coverage area.
Invalid SIM card. Complain to the service provider.
New network not authorised. Try manual selection or select a different network
(page 139).
Network call barring is set. Check network barrings (page 137).
Network overloaded. Try again later.
Phone loses
network.
Signal too weak. Reconnection to another service provider is auto-
matic (page 139). Switching phone off and on
again can speed this up.
Calls not possible. New SIM card inserted. Check for new barrings.
Charge limit reached. Reset limit with PIN2 (page 33).
Credit used up. Load credit.
Problem Possible causes Possible solution