Many mobile phones actually have the function of electronic compass. This sensor is usually used when we use mobile phones to locate and judge north and south. In addition to judging the direction of the electronic compass, some feng shui masters have also kept pace with the times and started to use iPads to show customers feng shui. At the same time, they will also tell you that it is imported from the United States.

To get back to the point, many people may have to ask about the electronic compass. Is it necessary to install an electronic compass when mobile phones have GPS functions? In fact, it is necessary, because mobile phones in the woods or in places where there are many buildings are likely to lose GPS signals, and the electronic compass can better ensure that you will not lose your direction. After all, the earth's magnetic field will not disappear without reason. What's more, GPS can only judge where we are. If we are stationary or moving slowly, GPS cannot know the direction we are facing. Therefore, mobile phones with electronic compass can make up for this.

The electronic compass relies on the earth's magnetic field to judge the direction. Is it possible that a small compass is installed inside it? No, no, no, if it is still an ordinary compass feng shui master's iPad, it must be a fake, which means it is high-tech! We can only say that the principle is a little familiar. The traditional compass uses a magnetized magnetic needle to sense the earth's magnetic field. The earth's magnetic field will cause the deflection of the magnetic needle until both ends of the magnetic needle point to the earth's magnetic south pole and magnetic north pole respectively. The electronic compass is the same, but it changes the magnetic needle into a magnetoresistive sensor, and then converts the geomagnetic information it feels into digital signals and outputs them to users.

It depends on the earth's magnetic field, right? Will it affect the electronic compass if we hold a magnet and shake it nearby? Next, we will verify this through video. The mobile phone used is Lenovo's latest K860i.

In the video, we can see that the magnet will indeed cause the deviation of the electronic compass direction. So that's why when we use iPhone to view maps or use the built-in compass, we often remind us to shake the phone to recalibrate the compass.