The little hole at the bottom of your phone can do more than keep your battery alive. Depending on your device, that USB-C port can connect a keyboard, display photos on a television, transfer files, and even charge another gadget. It can turn a phone into something closer to a pocket-sized computer, without another expensive device cluttering the desk.
There’s a catch, though. USB-C describes the connector’s shape, not everything it can do. Two phones can have identical ports and support very different features, which explains why one clever accessory works beautifully while another does absolutely nothing.
