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Protect the environment, Save energy, Recycle – Nokia 5228 User Manual

Page 114: Protect the environment 114

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Q: How do I calibrate the screen?

A: The screen is calibrated at the factory. If it is necessary to recalibrate the screen,

select Menu > Settings and Phone > Touch input > Touch screen

calibration. Follow the instructions.

Q: Why do I get the error message Expired certificate or Certificate

not valid yet when I am installing a downloaded application?

A: If Expired certificate or Certificate not valid yet is displayed, even if the

certificate should be valid, check that the current date and time in your device are

correct. You may have skipped the setting of date and time when starting the device

for the first time, or the mobile network may have failed to update these settings

to your device. To resolve this, select Menu > Settings and Phone > Phone

mgmt. > Factory settings. Restore the factory settings, and when the device

restarts, set the correct date and time.

20. Protect the environment

Save energy

You do not need to charge your battery so often if you do the following:
● Close applications and data connections, for example, your Bluetooth

connection, when not in use.

● Deactivate unnecessary sounds, such as touch screen and key tones.

Recycle

When this device has reached the end of its working life, all of its

materials can be recovered as materials and energy. To guarantee the

correct disposal and reuse, Nokia co-operates with its partners through

a program called We:recycle. For information on how to recycle your

old Nokia products and where to find collection sites, go to

www.nokia.com/werecycle, or using a mobile device, nokia.mobi/

werecycle, or call the Nokia Contact Center.

Protect the environment

© 2010 Nokia. All rights reserved.

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