A:Answer Hello there, JC. That is a great question you have there. The Gear S3 requires a Compatible Device to go through the initial set up of the watch and for updates as well. It is recommended that you use a compatible device to take advantage of all the features of this device. However, onnce the device has gone through initial setup, it may be used alone or simply paired with Bluetooth to any device. I hope this was informative. Have a great day.