Samsung’s upcoming Galaxy Z TriFold is getting attention for its unique hinge system and shock-absorbing screen, but it turns out there’s a neat PC trick that Samsung hasn’t talked about. The Trifold can act as a secondary monitor for your PC. At the unveiling, Samsung emphasized that this is the first phone to support standalone DeX. However, the second screen feature wasn’t included anywhere in the official notes, so it felt like a hidden productivity boost just waiting to be discovered.
According to Sam Mobile, the Galaxy Z TriFold can support a second screen feature that turns the unfolded display into an external monitor for a Windows PC or laptop. The phone appears to support the same second screen feature as Samsung Galaxy tablets, allowing the device to act as a wireless add-on display for a Windows PC.
Setting up the second screen on the Galaxy Z TriFold
Second Screen is based on Miracast, a wireless display standard supported by most Windows PCs. On the TriFold, it can be activated by going to Settings > Connected Devices > Second Screen. On your Windows computer, go to System > Settings > Display and select Connect to a wireless display. You can also press Windows + K to bring up the cast menu immediately.
When the two devices are connected, the TriFold acts as an extended monitor rather than simply mirroring the laptop screen. Installing Samsung’s Second Screen app on your PC gives you additional control over the experience, including better aspect ratio handling and smoother reconnection with regular use.
A foldable phone that opens to a tablet-sized panel becomes a natural side display for reference notes, messaging apps or email. It helps you break out of the cramped single-screen layout that most laptops force on you when traveling or working in small spaces. It obviously won’t replace a large monitor for complex work, but it does reduce the hassle associated with juggling tabs or carrying additional hardware. For a more comprehensive look at what this form factor could mean for the future of foldable devices, you can read more here.
