Check your blood pressure
Since the Galaxy S5, Galaxy phones have a heart rate monitor. The S9 adds a blood pressure reading. They call it "cardiac load factor". This is a wellness feature that gives you an idea of your blood pressure, but Samsung makes no medical claims. You still need to consult your doctor to consult a doctor or to monitor a condition. In addition, Samsung has partnered with UCSF to share your blood pressure data, and you can monitor your stress levels to give you instructions on how to lower your blood pressure.
Go to Samsung App Folder> Samsung Health> Tap HLF .