Can You Use a Smart Watch without a Data Plan?

Yes, you can use a smart watch without having a data plan on your mobile phone service. All smart phones and smart watches have Bluetooth connectivity. Bluetooth is a wireless connection like Wi-Fi.  You can use the Bluetooth connection to sync your smart watch with your smart phone. Services like weather forecasts will most likely need a live Internet connection to update. Just use the Wi-Fi on your smart phone to get the latest weather forecasts and sync it to your smart watch.

Smart watches do not require a data plan to sync with your smart phone, nor do they need the data plan to function. They are independent and self-sustaining.

Smart watches will connect to your smart phone and sync messages, make phone calls and notify you of emails, all by Bluetooth connectivity.