Can I make and receive calls and receive data messages via my Smartwatch without a Shared Number plan?

Yes, you can make and receive calls and receive data messages via your Smartwatch without a Shared Number plan, but it depends on the type of Smartwatch you have and how it is connected to your phone.

For instance, if you have a Bluetooth model, your Smartwatch must be connected to your phone via Bluetooth to make and receive calls. On the other hand, if you have an LTE model, you can make and receive calls directly from the watch without being connected to your phone.

However, if you want to use your Smartwatch independently of your phone, you will need a cellular plan for the watch. This allows the watch to function as a standalone device, making and receiving calls and use data without needing to be connected to a smartphone

FYI: In case you have no idea what LTE is, here is a simple description: LTE stands for Long-Term Evolution. It's a standard for wireless broadband communication. LTE smartwatches can connect to cellular networks on their own, so they can make calls, send messages, and use data without needing to be paired with a phone.