To solve this issue, pre-installed apps must able to be moved from internal memory to SD card.
Procedures:
- Install Titanium Backup on a rooted phone
- Goto Titanium Backup > Backup/Restore > (Select App) > Un-install
- Uninstall those pre-installed apps such as Google Maps and Google Search
- Re-installed them through the Market
- Move them to the SD Card with link2SD (instead of App2SD cos link2SD can move more extra data and apps to SD card)
- Leave apps needed at boot such as Lookout at the internal memory
- Keep apps or widgets don't work on the SD Card such as Market and Youtube it's almost all on my SD Card.