Privacy settings on Facebook?

[Barry K]

Hello,
I currently have my cellphone number on facebook set so it can only be seen by me. One of the people on my friends list (who never had my number before) got a new phone this morning and when she synced her contacts with facebook, my number was added to her phone contacts list. Is there another option on there somewhere that prevents this from happening?
Thanks.
I know how to change my settings, but my number is private and people are still getting it by syncing their phone to their Facebook contacts.

[Yuuuup]

To edit your privacy settings from the mobile site, simply navigate to the Privacy Settings page from the Settings link at the bottom of any m.facebook.com page