Add Yahoo as a preferred source to see more of our stories on Google. This article explains how to use the iPhone compass and level. Instructions apply to iPhones running iOS 12 and iOS 11 except as ...

Illustration shows how a smartphone magnetometer can measure a host of biomedical properties in liquid samples using a magnetized hydrogel. Nearly every modern cellphone has a built-in compass, or ...

Nearly every modern cellphone has a built-in compass, or magnetometer, that detects the direction of Earth's magnetic field, providing critical information for navigation. Now a team of researchers at ...