How to set the direction with a cell phone compass?

When you turn on your compass, first tilt your phone to correct it - let the little red ball roll around in a circle. Then, let the thick white line for due north align with the small red triangle that indicates due north. Facing is the due north direction. As shown in the picture:

Expanded:

According to the reading of the e-compass, the map is automatically rotated to a direction that is easy for the user to read. Perfect for people who are not very good with maps. In addition, as with a traditional compass, you can roughly estimate where you are based on landmarks (experienced people use it like a GPS), control the direction of travel ...... And so on, and so forth.

The electronic compass, also called the digital compass, is a modern method of using the geomagnetic field to set the North Pole, produced by electronic technology. The modern production of magnetoresistive sensors using advanced machining processes has provided a powerful aid to the digitization of the compass.At the beginning of the 21st century, there were mainly electronic compasses machined from magnetoresistive sensors and flux gates.

While GPS has a wide range of applications in navigation, positioning, speed measurement, orientation, but because its signal is often blocked by the terrain, features, resulting in greatly reduced accuracy, and even can not be used. Especially in high-rise urban areas and dense vegetation in the forest area, the effectiveness of the GPS signal is only 60%. And in a stationary situation, GPS can not give direction information.

In order to make up for this shortcoming, you can use a combination of navigation and orientation methods. Electronic compass products are designed to meet such user needs. It can effectively compensate for the GPS signal, to ensure that the navigation and orientation information is 100% effective, even after the GPS signal lock can also work normally, to achieve the "loss of stars do not lose to".

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