1. Find the "Wallet" application on your Huawei phone. This application is built in by Huawei and does not require subsequent installation; 2. After entering the application, click "Car Key" and then press "Add" at the bottom of the page. button; 3. Follow the prompts to add a key, with the NFC card trademark facing the phone, swipe it in the upper sensing area on the back, and bind the fingerprint to unlock; 4. After a period of time, the NFC information will be copied to the phone, and then you can use it normally .