Your Fitbit watch can connect to open, WEP, WPA personal, and WPA2 personal Wi-Fi networks. Your watch won’t connect to 5GHz, 802.11ac, WPA enterprise, or public Wi-Fi networks that require logins, subscriptions, or profiles. If you see a captive portal when connecting to the Wi-Fi network on a computer, the network isn’t supported. A captive portal opens a web page in your browser and could ask for a username and password, payment, or acceptance of terms. This is commonly found when connecting to Wi-Fi networks in hotels, airports, coffee shops, and other public places. For best results, connect your watch to your home or work Wi-Fi network. Make sure you know the network password before connecting.
Note that you can connect your watch to a personal hotspot which lets you share the cellular data of your phone or tablet when you don’t have access to a Wi-Fi network. Additional data charges from your mobile carrier may apply.