I don't know.
1. First of all, scanning the QR code must ensure that the surrounding light is not too dark, the QR code must be clear, and the mobile phone camera cannot be blocked by foreign objects.
2. Then you can try to turn on the flashlight function of the mobile phone to enhance the light scanning code.
3. Finally, don't stick the mobile phone and the QR code too close, just let all the QR codes enter the mobile phone. Youxueche app has brought a brand-new way to learn driving test knowledge online for local driving test students in Liaoning, allowing you to continuously and comprehensively learn through online knowledge resources. Have a variety of examination functions, so that you can constantly enrich your knowledge.