Step 1: Open the mobile phone compass.
First, open the compass application on your phone. For iPhone users, you can find the compass in the Tools folder. Android users can search for "compass" in the app store to download and install.
Step 2: Calibrate the compass
The compass needs to be calibrated before it can be used. The calibration method is: put the mobile phone flat on the palm of your hand, and then rotate the mobile phone three times around its axis, so that you can calibrate the compass. If the compass is still inaccurate, you can try to recalibrate it.
Step 3: Determine the direction
After the compass calibration is completed, you can start to determine the direction. The compass is usually marked with letters such as "N", "S", "E" and "W", which represent north, south, east and west respectively. In addition, there is a pointer on the compass, pointing to the direction pointed by the mobile phone.
If you want to determine the direction of the southeast and northwest, you can put your mobile phone flat on your palm and then aim the compass at yourself. At this time, the direction pointed by the pointer is due north. Then according to the true north direction, other directions can be determined. For example, due east is on the right side of due north, due west is on the left side of due north, and due south is the opposite direction of due north.
In addition, the compass can also display the tilt angle and height angle of the mobile phone, which is also very useful for some special application scenarios.