Your iPhone's compass is a feature you may not know about, but it can save your life. However, you'll need to calibrate it before tis first use.

You can automatically calibrate your iPhone’s compass app by toggling Compass Calibration from the Settings app. You can also disable True North and move your iPhone in a figure-8 motion to ...

Trimec Aviation, a certified Part 145 repair station based in Fort Worth, has added a Capital Avionics CA-420 digital compass rose system to calibrate an aircraft magnetic compass.

Recalibrating your compass on Google Maps might sound difficult, but it isn’t, and it doesn’t involve going into any settings menus, using any strange commands, or changing anything on your phone.

2. If this is the first time you're using the Compass app, you'll have to set it up by calibrating the compass. 3. First, position your phone flat against your palm, with the screen facing upwards.