We appreciate you reaching out regarding the Galaxy Watch Ultra, GP. We're excited to hear about your interest in our Watch Ultra. We have excellent news for you! Samsung offers a Bluetooth and LTE-compatible version of the Galaxy Watch. The LTE model enables you to receive calls and messages without being connected to a phone. However, you will need to activate service for your watch through the same carrier as your mobile phone. Once activated, you can enjoy the freedom of using the watch without needing to carry your cell phone with you, especially during activities like long runs. It's essential to emphasize that you must activate the service for your watch first. Should you have any further questions, don't hesitate to contact Support. -Kelvin