burp grabs mobile phone traffic

1. The mobile phone and the computer are connected to a network (in a network segment, can be pinged);
2. ipconfig to view the local IP1, burp configuration agent (IP1+port 1);
3. Mobile phone configuration agent (manually, IP1, port 1) );
4. Install the certificate: export the certificate from burp, change it to .cer format, put it in the root directory of the phone storage, open the phone, set-other settings-security and privacy-import the certificate from the storage device-install the certificate.
5. Finish. Can grab http/https traffic.