One reason smartphones are becoming more and more expensive is that they no longer offer the typical communication services required of any mobile phone. For instance, in addition to the usual tasks, the Galaxy S9 and S9+ can also be used to measure your blood pressure. We already knew what the S-Health app can help you achieve, but with this new tool, which utilizes the S9’s “revolutionary optical sensor” to directly measure blood pressure, there’s no doubt that the company is truly committed to the well-being of those who will spend a fortune on one of its most prized assets.