Thanks for reaching out. Based on your model number your phone is an international device. This forum is for support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link: https://www.samsung.com/us/common/visitlocationsite.html
Of course it is, the Watch4 and Watch5 are compatible as long as you have access to the Galaxy Wearable app (which should come preinstalled anyway since it's a Samsung smartphone...).
Thanks for reaching out. Based on your model number your phone is an international device. This forum is for support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link: https://www.samsung.com/us/common/visitlocationsite.html
