1. Please confirm whether the memory card has been inserted into the camera. The memory card needs to be inserted first for video recording and review;
2. If the memory card is inserted, please try to format the memory card in the "Mi Jia" app or through the computer;
3. If it can't be formatted or there are still problems after formatting, it is recommended to buy the camera special memory card of the brand manufacturer.
4. If you are unable to qualify, please use a high-speed memory card as much as possible. It is recommended to choose products with Class10, U1, and U3 speed signs. It is recommended to use a dedicated memory card for driving recorders.