- Launch VoiceCentral.
- Go to Keypad.
- Enter ##335*266#.
- Tap Call.
- Wait for a message stating that your contacts were successfully cleared and tap OK. The amount of time it takes to clear your contacts depends on the number of contacts.
- Go to Contacts.
- Tap Sync to download your current contact list from Google Voice.
Performing these steps should resolve any issues with out of sync contacts.