There are mainly 2 kinds of Smart Switch not working problems: connectivity problem and stability problem, that is Smart Switch fails to connect the device or the app gets stuck in transferring data. It seems like a perfect solution for Samsung file transfer until you can't get Smart Switch to work on your devices. Samsung Smart Switch can transfer contents from your old devices to a new Samsung phone in a wireless or wired way to help you easily switch to new Galaxy S9/S10 from Android, iPhone, Windows phone, and Blackberry.
