TL;DRSamsung’s Galaxy Z TriFold supports the “Second Screen” feature, letting it act as a wireless external monitor for your Windows PC.This feature uses the Miracast standard to extend your desktop to the phone’s 10-inch screen without requiring any cables.You can connect by opening the Second Screen page on the phone and pressing “Windows + K” on your PC to find the device.With the Galaxy Z TriFold, Samsung has finally delivered on the original promise of foldable phones: a device that truly transforms from a phone into a tablet. When folded, you interact with a standard 6.5-inch cover display, but unfolding it reveals a massive 10-inch screen. The inner display is so large, in fact, that the software treats it like a tablet, even enabling standalone Samsung DeX directly on the device. But the TriFold’s utility doesn’t end there: it can also function as a secondary monitor for your PC.Don’t want to miss the best from Android Authority?