While they may seem similar, here are some differences between Intel Unison and Phone Link, which will help you know which is better for you. Phone Link works over a Bluetooth connection, and once connected, it allows you to transfer files between the two devices, take calls and send messages, and stay on top of your notifications right from your Windows PC. And while it doesn't come close to the level of integration between a Mac and an iPhone, it still offers an impressive range of features, making it a vital software solution for iPhone and Windows PC users. Although originally available only for Android devices, the app now supports iPhones as well. Phone Link is a tool designed to help you sync your smartphone with your Windows PC.