How do you delete contacts on the LG Rumor?

This did not work, any other suggestions.

Use the Security menu to quickly erase all the contents of your Contacts list.
1. Press Menu > Settings/Tools > Settings > More... > Security and enter your lock code.
2. Select Erase/Reset > Erase Contacts.
3. If you are certain you would like to erase all of your Contacts entries, select Yes.

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