About a year after founding her solo venture firm in 2018, Day One Ventures founder Masha Bucher started running her $100 million fund almost entirely from her phone. She’s always on the move, jetting from San Francisco to meet founders, to Zurich to see investors, to Peru for vacation. On some work trips, she even leaves her laptop behind, realizing she was more efficient with her phone. The strategy appears to have paid off: As a solo venture capitalist, Bucher has placed bets on email service Superhuman, Sam Altman’s Worldcoin, and privacy-focused search engines like DuckDuckGo and You.com. Bucher, who grew up in Russia and recently renounced her involvement in a pro-Putin youth group as a teenager, gives us a peek inside her phone.