How do to free up memory on device

H
ow do to free up memory on device. If you feel that your device slowly because some memory unused and want to remove, this the way.
a. Delete Cache and Cookies in Browser
1. On menu, Click Browser application.
2. Click menu key
2. Select Options > Cache Operations
3. Select Clear History or Pushed Content or Cookie Cache.

b. Delete unused Languages
1. On menu, Click Options > Advanced Options > Applications
2. Choose the unused languages
3. Press the menu key and select Delete
4. Remove battery for 30 seconds

c. Remove call logs
1. On menu, Click the Messages application and press the menu key
2. Click View Folder,
3. Click Phone Call Logs
4. Scroll to the top date and highlight it
5. Press the menu key and select Delete Prior


M. Arief Gustianto