It's alright to me! If your iPhone is connected to WiFi, then in this case, you're using Bluetooth to connect to the Apple Watch. Apple Watch is connected to WiFi unlimited LAN by default! Of course, you can also manually connect to WiFi. However, the GPS version of the Apple Watch is not very useful for connecting to WiFi. Like sending and receiving text messages, you still need the iPhone to collect it before it can be synchronized to the Apple Watch. For reference only