Blackberry Pearl 8220 User Guide - Page 237

User Guide Memory cleaning Generate an encryption key You can perform this task if your BlackBerry® device is associated with an email account that uses a BlackBerry Enterprise Server that supports this feature. For more information, contact your administrator. If your device is associated with an email account that uses a BlackBerry Enterprise Server that does not support this feature, you can generate an encryption key using the email settings tool of the BlackBerry® Desktop Manager. For more information, see the BlackBerry Desktop Software Online Help. 1. On the Home screen, click the Options icon. 2. Click Security Options. 3. Click General Settings. 4. Click a service. 5. Click Regenerate Encryption Key. 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, click the Options icon. 2. Click Security Options. 235