Pictures beat words: In August, U.S. smartphone owners visited Instagram from their smartphones more frequently and for longer periods of time than they visited Twitter.

That data comes from comScore, via a new mobile measurement report: It says that throughout August, Instagram had an average of 7.3 million daily active users — or DAUs, in Facebook parlance. That tops of Twitter’s 6.9 million DAUs over the same period of time.

What’s more, the average Instagram user spent 257 minutes accessing the photo-sharing site via mobile device in August, the data claims, while the average Twitter user over the same period spent 170 minutes viewing.

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