Sorry for the inconvenience, may I know whether you connected other bluetooth device with the Galaxy S10, such as smartwatch? If yes, pls unbind the all bluettooth device at first and check if you could pair the u1 or not. If still no help, it could be some of Samsung's mobile phones are not compatible with Sofabaton's Bluetooth, which leads to the inability to connect and cannot be used normally. Tks for your understanding.