Blackberry 8520 manual Memory cleaning, About content compression, About memory cleaning

User Guide Security

About content compression

Content compression is designed to reduce the size of your BlackBerry® device data while maintaining the integrity of that data. When content compression is turned on, your device compresses all device data, including messages, contacts, calendar entries, tasks, and memos. You should keep content compression turned on.

If content compression and content protection are turned on, your device compresses device data before encrypting it.

Memory cleaning

About memory cleaning

Memory cleaning is designed to delete sensitive data from the temporary memory on your BlackBerry® device. Examples of sensitive data include sensitive data in the cache for the key store browser, unencrypted data from email messages, LDAP authentication passwords, and data from certificate and key searches.

When memory cleaning is turned on, the memory cleaning application is designed to delete sensitive data automatically in the following situations:

•when you insert your device in a holster

•when you do not use your device for a specified period of time

•when you synchronize with your computer

•when you change the time or the time zone for your device

•when you lock your device

Turn on memory cleaning

1.On the Home screen or in a folder, click the Options icon.

2.Click Security Options.

3.Click Memory Cleaning.

4.Change the Status field to Enabled.

5.Press the Menu key.

6.Click Save.

Change when your device deletes sensitive data from the temporary device memory

1.On the Home screen or in a folder, click the Options icon.

2.Click Security Options.

3.Click Memory Cleaning.

4.Perform any of the following actions:

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