1. Create one user, and add him to be the friend of the default user--admin.
2. Now go to Contacts portlet, and click on the icon which will leads you to add contact info.
3. Now fill in the following in the phone-number-inputbox, "123232aadsfa" and "asdfasdfa", and you would see different result. Using the pure letter string, you would get the error message, but using the first one, you would get these letters got deleted directly without giving any warning message.