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140
Maintenance
Using this guide
Overview DT570
Contents
Preparing for use
Basic use
Telephoning options
Advanced telephoning
Phone book
Mail
Settings
Extra features
Using networks
Tips
Troubleshooting
Maintenance
Safety instructions
Technical
specifications
Glossary
Maintenance
Tip
Click on a topic.
Overview
Required service (page 141)
Cleaning (page 142)
Changing the battery (page 143)