Kerry Wan/ZDNETIt’s not a stretch to say that only the most powerful of power users have heard of Samsung DeX. While full of whimsical capability, it’s one of the most undermined, poorly advertised features on modern-day Samsung phones, so much so that I only remembered it after reading a recent story from my colleague Jack Wallen.Also: I tried to replace my desktop with a phone for work – 5 frustrating lessons I learnedIn theory, Samsung DeX should be one of the most transformative features to come to smartphones. It allows users to quickly switch from their devices’ mobile interface to a more computer-like experience when hooked up to a monitor or TV. Since the feature was released in 2017, it’s received several upgrades, including wireless connectivity and enhanced multitasking.The story written by Wallen, by the way, speaks to how smartphones aren’t capable of replacing our laptops. So, I tested that theory myself, powering my workflow for a few days solely with the Galaxy S25 Ultra and Samsung DeX. Here’s how it fared as a standalone computing device and why replacing your laptop with it might not be the worst idea. More