How do smartphones work out what direction they are pointing?
Sensor
What is a Magnetometer and How Does It Work?
Magnetometer or Compass Sensor in iPhone, Android, or Any Mobile Device. HINDI - YouTube
How does a compass work in smart phones? What sensors are used and how do they show the correct directions? - Quora
Magnetic Field Sensor APK for Android Download
Taidacent Digital Cell Phone Compass Magnetometer Sensor In Mobile Total Three 3 Axis Magnetic Field Sensor Bmm150 For Android - Buy Bmm150,3 Axis Magnetic Field Sensor,Magnetometer Sensor For Android Product on Alibaba.com
Sensors | Free Full-Text | Authentication of Smartphone Users Based on Activity Recognition and Mobile Sensing
Mobile Phone Sensors - Types of Sensors in Smartphone
All the Sensors in Your Smartphone, and How They Work
PDF] Measuring Earth's Magnetic Field Using a Smartphone Magnetometer | Semantic Scholar
Measure magnetic field along X, Y, and Z axes - Simulink
SENSOR TECHNOLOGY: Your smart phone is full of them. – BE WHERE THE PEOPLE ARE