Yes. In fact, to use all of the features on your Apple Watch, make sure your associated iPhone has Wi-Fi and Bluetooth turned on. On your iPhone, go to Control Centre and check sure Wi-Fi and Bluetooth are turned on. To interact with your associated iPhone, the Apple Watch utilizes Wi-Fi and Bluetooth. If you have cellular service, your watch can connect to a mobile network as well. Your watch automatically alternates between them to choose the most energy-efficient connection.