To change your phone's language from Spanish to English
1. From the main screen, press the Center Select key.
2. Use the Navigation wheel to highlight Settings & Tools and press the Center Select key.
3. Press 5
4. Press 4
5. Use the Navigation wheel to select English or Español, and press the Center Select key.

Or you can download the user manual found in Samsung U470 Juke's product page here in Cell Phones etc. You can find the link on the right hand side of the screen. After downloading, go to page 93 of the manual and there you can find the instructions on how to change your phone's language.