Get started with Google DuoLearn about Google DuoSet up Google DuoSet up Google Duo on KaiOSSet up Duo on your Android TVFind & invite contactsHelp make Google Duo betterMake a callMake calls with Google DuoPreview video calls with Knock KnockLeave & check messages with Google DuoBlock or report someoneUse or share other apps while on a callTake screenshots of Duo video chatsUse family modeChange settingsLimit how much mobile data Google Duo usesSet phone to vibrate for callsStop getting Google Duo callsConnect a Google AccountCheck your call historyTroubleshoot issuesCan’t verify phone numberCan't find or sync contactsFix sound or video issuesFix missing or delayed call notificationsFix problems using Google Duo on your display or speakerSend feedback about Google DuoPrivacy in Duo Your calls stay private with end-to-end encryptionYour facial data stays private with Duo Effects & Portrait Mode