1. Generally, the built-in compass of mobile phone is in the system tool or the add-on folder of iPhone. You can also find the compass application by searching your mobile phone.
2. Click Open to see the current direction and degree, as well as information such as latitude, longitude and altitude coordinates; When you hold your mobile phone normally, the direction you face is the direction that the compass faces, and generally there will be a red pointer pointing to the north;
3. Sometimes the first time you use a mobile phone, you need to cross eight characters or other actions to help correct it. You can use it after correcting it according to the prompts.