Will SmartThings data be deleted after a factory reset on your Samsung mobile device?

Performing a factory reset on your Samsung smartphone will reset all data registered on the device. However, it's important to note that while the SmartThings data on your phone will be reset, the data associated with your account, including device information and settings, will remain intact and accessible once you sign back into the SmartThings app on your reset device.

As a consequence, if you sign into SmartThings using your existing Samsung account, a list of registered devices can be retrieved from the server, allowing you to use them without the need for re-registration.