User's Manual

Troubleshooting 177
Preliminary Layla850 P1B
REFERENCE
Troubleshooting
This chapter consists of a selection of suggestions for solving
possible problems with your P910a. If this does not help, please
try the Knowledge base on the global support site,
www.sonyericsson.com/support
. There you also find other
information that can be helpful.
Your P910a also contains help files with additional information.
Access help with the menu option
Edit > Help or, in many dialog
boxes, with the help icon .
To improve performance, you can update the software of your
P910a. See “Sony Ericsson Update Service” on page 132.
If you need to hand in your P910a for repair, please note that
you may lose information and content that you have saved in
your P910a. You are advised to make a copy of such information
(make a backup) before handing your P910a in for repair.
Start-up problems
P910a will not
start
• Handheld phone: recharge or replace the battery.
• Make sure the contacts on the battery and
charger are clean and avoid charging the battery
in extreme temperatures.
• Vehicle Handsfree: check that the P910a is
properly inserted into the holder and check the
fuse in the fuse holder (connected to the battery
cable).
Lock problems
Insert card • Make sure a SIM card is activated and inserted
into your P910a. See ‘SIM card’ on page 12.
Blocked SIM
card
If your PIN is entered incorrectly three times in a
row, the SIM card will be blocked. You can
unblock it by using your PUK. See ‘SIM card lock’
on page 37.