Survey: TikTok has surpassed Instagram as the second most popular social app for US teens, with 34% choosing Snapchat, 29% TikTok, and 25% Instagram (Salvador Rodriguez/CNBC)

Salvador Rodriguez / CNBC:
Survey: TikTok has surpassed Instagram as the second most popular social app for US teens, with 34% choosing Snapchat, 29% TikTok, and 25% Instagram  —  - TikTok has surpassed Instagram as teenagers' second favorite social media app, according to a report published on Tuesday.