Greetings Nan, thank you for finding the opportunity to ask us your question about the Samsung Galaxy Watch8 Classic. You can set it up your Galaxy Watch8 Classic initially without a phone by selecting "Continue without connecting," but functionality remains limited until paired. Basic functions like time and fitness tracking will be available but for full features like calls, texts, and app syncing, pairing with a phone is needed. If you have any other questions or if you would like further assistance, do not hesitate to contact Support. Thanks for being a valued Samsung customer. - Debra