Duo's Knock Knock feature lets you see who's calling before you answer

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[@punket84]

ROFL THAT ENDING

[@iqbalantule1130]

Need to ad blutooth option

[@assouod2566]

Tank you

[@Talal_2B]

that ending tho xDDD

[@richarddeloatch7451]

Turn my doodle knock knock on

[@richarddeloatch7451]

Turn on Duo knock knock on

[@aadityabawkar8714]

what's more ??

[@ss-qh5fp]

Someone sitting in toilet

[@zyn6513]

Why???!!

[@jacobthompson2095]

Lame