How A Smartwatch Is Compatible With A Smart Phone 

A smartwatch can be used to connect with the phone using Bluetooth technology, similar to the fitness trackers of today. The smartwatch can connect to certain functions of the phone making it easier to text, call or listen to music. A smartwatch cannot be used with a smart phone. Although it can tell the time, it doesn't offer as many options like a smartphone. https://www.hometownstation.com/news-articles/kore-2-0-watch-reviews-new-fitness-tracker-with-many-features-406888