1. under the Standby page, click "Application" and click "My Files".
2. Click "All Files" and select "Device storage" ( Mobile memory).
3. Find and check the Navigation map packet (autonavidata50), Click on the top right corner of the screen. Three-font " Menu" icon and select "Copy" (this folder can only be copied, not removable delete.) and then return to the parent directory and click on "SD memorycard" (extended memory cards).
4. When you have completed the transfer, return to the mobile phone standby page, click "Application", click "Set".
5. Click "More" , and click "Save".
6. After entering the storage interface, select "Various files", find the Navigation map packet (autonavidata50) Check the previous check box , click the lower left corner "Delete" button.
tip: If you are sure that you are not using the dictionary application, you can select the diodict3b "folder, Removing dictionary packets can save additional 547M space. (This action will cause the dictionary to be unusable and cannot be recovered on its own, use caution and back up the file beforehand.) )
7. When you open the navigation software again, click "Auto Search" to reposition the packet, then click "Save Settings".
In addition, you can remove the temporary unwanted city data to free up space: go to "navigation" --" more Features-"Data download Management", after the "downloaded" list to check the temporary unwanted city data options, click "Delete XXX options, about XXXXMB " can be.