Philips W5510 User Manual page 25

How to prolong the battery life of your phone
To have your mobile phone function properly, sufficient battery
power is important. For the power-saving purpose, do the
following, if applicable:
• Turn off the Bluetooth function of your phone.
• Set the backlight level and duration of your phone to a
low value.
• Turn on the auto keypad lock; turn off the key sounds,
tap vibration, or vibration alerts.
• Establish GPRS connection when needed. Otherwise,
your phone will keep searching for GPRS connection,
and drain your battery power.
• Turn off your phone if there is no coverage. Otherwise,
the phone will keep searching for network, and drain
your battery power.
Troubleshooting
The phone does not switch on
Remove/reinstall the battery. Then charge the phone until the
battery icon stops scrolling. Unplug the charger and try to switch
the mobile on.
The display shows BLOCKED when you switch on the
phone
Somebody tried to use your phone but didn't know the PIN
code or the unblocking code (PUK). Contact your service
provider.
The display shows IMSI failure
This problem is related to your subscription. Contact your
operator.
Your phone doesn't return to home screen
Long press the Power key or switch off the phone, check that
the SIM card and the battery are installed correctly and switch it
on again.
The network symbol is not displayed
The network connection is lost. Either you are in a radio shadow
(in a tunnel or between tall buildings) or you are outside the
network coverage area. Try from another place to reconnect to
the network(Especially when abroad), check that the antenna is
in place if your mobile has an external antenna, or contact your
network operator for assistance/information.
The display doesn't respond (or the display responds
slowly) to key presses
The display responds more slowly at very low temperatures. This
is normal and does not affect the operation of the phone. Take
the phone to a warmer place and try again. In other cases please
contact your phone supplier.
Your battery seems to over heat
You might be using a charger that was not intended for use
with your phone. Make sure you always use the Philips authentic
accessory shipped with your phone.
Your phone doesn't display the phone numbers of
incoming calls
This feature is network and subscription dependent. If the
network doesn't send the caller's number, the phone will display
Call 1 or Withheld instead. Contact your operator for detailed
Safety & Precaution 23