About Compression - Blackberry 9520 User Manual

User Guide
• To use mass storage mode to transfer files between your BlackBerry® device and your computer, set the Mass Storage Mode
Support field to On. If necessary, change the Auto Enable Mass Storage Mode When Connected field.
• To use MTP to transfer media files between your device and your computer, set the Media Transfer Protocol (MTP) field to On. If
necessary, change the Auto Enable Mass Storage Mode When Connected field.
• To receive a prompt to select mass storage mode or MTP when you connect your device to your computer, set the Auto Enable Mass
Storage Mode When Connected field to Prompt.
4. Press the Menu key.
5. Click Save.
Turn off mass storage mode or MTP
1. On the Home screen or in a folder, click the Options icon.
2. Click Memory.
3. Change the Media Transfer Protocol (MTP) field or the Mass Storage Mode Support field to No.
4. Press the Menu key.
5. Click Save.
Turn off the prompt for mass storage mode
1. On the Home screen or in a folder, click the Options icon.
2. Click Memory.
3. Change the Auto Enable Mass Storage Mode When Connected field to Yes or No.
4. Press the Menu key.
5. Click Save.

About compression

Compression is designed to reduce the size of your BlackBerry® device data while maintaining the integrity of that data. When compression
is turned on, your device compresses all device data, including messages, contacts, calendar entries, tasks, and memos. You should keep
compression turned on.
If both compression and encryption are turned on, your device compresses device data before encrypting it.
About file encryption
File encryption is designed to protect files that you store in the BlackBerry® device memory and on a media card that can be inserted in your
device. You can encrypt the files in the device memory and on your media card using an encryption key that your device generates, your device
password, or both.
If you encrypt the files using an encryption key that your device generates, you can only access the files on your media card when the media
card is inserted in your device. If you encrypt the files using your device password, you can access the files on your media card in any device
that you insert your media card into, as long as you know the password for the device.
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