If you skipped setting up your social network account (such as Facebook, Twitter, or Flickr) when you first turned on and set up your phone, you can still sign in to these accounts through your phone’s settings.
From the Home screen, press
, and then tap .
Tap Add account, and then tap the account type you want to add.
Follow the onscreen instructions to enter the account information.
Your social network account is then added to the list on the Accounts & sync screen. Depending on how you configured the account, the new information may start synchronizing with your phone.