How to secretly intercept the content of mobile phone messages sent by husband and others?

If you are a mobile user in China, the mobile phone you want to locate is also a mobile user. Then you just need to download the mobile phone map software of China Mobile. When you locate the other party, the other party will receive a short message: So-and-so mobile phone number is locating you, do you agree? The other party can always agree, so that in the future, positioning is just a short message to inform the other party that you are positioning him, without asking for his consent; He can also allow you to check it only once, so that the next time you check it, he will receive a message asking for authorization again; He can also refuse your inquiry. So you can't find each other's position. If the other party authorizes you to inquire, you will see the other party's location on the map. If you want unauthorized positioning, you need to buy software, such as Beijing Tianying software, and the error is relatively small.