Tim Cook says Apple (AAPL) now has 2.5 billion devices actively in use Apple devices continue to be adopted around the world. Apple now has more than 2.5 billion devices actively in use across the globe. The stat came from CEO Tim Cook in the company’s newest earnings release. “We are also excited to announce that our installed base now has more than 2.5 billion active devices, which is a testament to incredible customer satisfaction for the very best products and services in the world,” he wrote. Apple joined Microsoft, Facebook, and Tesla as other major companies that reported earnings this week.