[jeremyckitching]

Sorry, forgot your device is different. This is from the T-Mobile support site:

Enabling caller ID

To enable caller ID, perform the following steps:

1. At the Home screen, press the Menu key.


2. Scroll to the Call Log icon and click the trackball.


3. Press the Menu key.


4. Scroll to Options and click the trackball.


5. At General Options, click the trackball.


6. Scroll the Restrict My Identity and click the trackball.


7. Scroll to Off and click the trackball.


8. Press the Menu key.


9. Scroll to Save and click the trackball.