To use the compass on your iPhone, you simply need to launch the Compass app and calibrate it. Here's what you need to know.
You can calibrate your Google Maps app to give more accurate directions on iPhone or Android, though your options on iPhone ...
Tap and hold or just drag the app from the App Library App Library > long press the app > tap Add to Home Screen. You can also search for apps from the App Library and add them to your home screen ...