One of the most important changes in Samsung’s new phones is a simple one: when you long-press the side button on your phone, instead of activating Samsung’s own Bixby assistant by default, you’ll get Google Gemini .

It's becoming more and more clear that you simply cannot launch a new smartphone these days without paying loads of attention to the included AI assistant. This is as true as ever with today's launch of the Galaxy S25 series,

Samsung touted improvements to its Galaxy AI system, as well as the AI-enabled Google Gemini assistant. Most of the upgrades are available on the latest One UI 7 software release, which will be available for older S-series generations sometime after the S25 release, Samsung says.