losing call logs and messages

if you are facing problem losing your call logs and messages now and then on your BB then you have to free some space on your BB , here are some simple steps to guide you
Reduce Allocated Media Memory
1. Scroll to and select the Media icon.
2. Select the Pictures icon.
3. Select the Device Memory icon.
4. Press the Menu key, select Options.
5. Change the Device Memory Limit to 12MB.
6. Press the Menu key, select Save.
7. Hard Reset the BlackBerry.
Reduce Calendar Keep Appointments to 60 days or less
1. Scroll to and select the Calendar icon.
2. Press the Menu key, select Options.
3. Scroll to and select Keep Appointments.
4. Select the desired amount of time to keep appointments.
5. Press the Menu key, select Save.
6. Hard Reset the BlackBerry.
Reduce the amount of time Messages are kept on the handheld.
1. Scroll to and select the Messages icon.
2. Press the Menu key, select Options.
3. Select General Options.
4. Scroll to and select Keep Messages.
5. Select the desired amount of time to keep appointments.
6. Press the Menu key, select Save.
7. Hard Reset the BlackBerry.
Clear Cache and Cookies
1. Scroll to and select the Browser or Media Net icon.
2. Press the Menu key.
3. Select Options.
4. Select Cache Operations.
5. Select Clear History.
6. Note: Clear History will no longer appear once it has been selected.
7. Hard Reset the BlackBerry.
Delete Unused Languages
Note: If deleting both the unused languages and the sample video wait to restart the device until both processes have been completed
1. Scroll to and select the Settings icon.
2. Select the Options icon.
3. Select Advanced Options.
4. Select Applications.
5. Scroll to and highlight each of the unused languages under the Input Support and Language and Input Support subheadings.
6. Press the Menu key.
7. Select Delete.
8. Select Delete.
9. When prompted to Restart select No until all unused languages are deleted.
10. NOTE:Repeat steps 4-8 until all unused languages are deleted then select Yes when prompted to restart.
11. Hard Reset the BlackBerry.
Delete Sample Video
Note: If deleting both the unused languages and the sample video wait to restart the device until both processes have been completed. The sample video is the pre-installed video for the blackberry and is ~2.2MB in size.
1. Scroll to and select the Settings icon.
2. Select the Options icon.
3. Select Advanced Options.
4. Select Applications.
5. Scroll to and highlight "Blackberry Sample Video".
6. Press the Menu key.
7. Select Delete.
8. Select Delete.
9. When prompted to Restart select Yes.
10. Hard Reset the BlackBerry.
Change Call Log Options
1. Scroll to and select the Phone icon.
2. Press the Menu key.
3. Select Options.
4. Select Call Logging.
5. Select either Missed Calls or None.
6. Hard Reset the BlackBerry.

thanks