What are the overseas scam messages?

+stands for international prefix, just like dialing+or 00, 86 stands for China when making an international call with a mobile phone. To call home from abroad, you should dial +86 or 0086 first. Generally, it can be omitted in China, but it doesn't hurt to add it, which makes the phone number unique and complete in the world. So the mobile phone number we received in China starts with +86, which means that this mobile phone number belongs to a domestic user!