Hi there, lalli127. Thanks for contacting us.
Unfortunately, we can't activate Apple Watch. If you have Boost mobile hotspot it will share the data service with any Wi-Fi capable device.
If I buy an Apple Watch with Cellular, will using my hotspot still give me access to answering calls and sending messages through the watch?
Hey there @abi_chino. We apologize for the inconvenience. We do not offer service for Apple Watch devices. We apologize.