Foldable phones all use flexible screens, which can result in dents, scratches, and other issues on the inner screen if used improperly. This is not a product quality issue.
For your reference, here are some details about the safety precautions:
1. The slight folding marks in the bending area of the inner screen and the sound during the opening and closing of the phone are all normal phenomena, please feel free to use;
2. During use and carrying, please avoid sharp objects (such as pens, nails, etc.) pressing on the inner screen. Before folding the screen, do not place items such as cards, coins, keys, etc., on the screen;
3. As it contains precision components, to extend its lifespan, please do not expose it to liquids, dust, and other environments, and avoid foreign objects entering the device;
4. The internal screen comes with a specially designed dedicated protective film from the factory. Please do not tear it off or paste other protective films by yourself, as this may damage the screen and affect the warranty. If you need to replace the protective film, please consult Xiaomi's after-sales service;
5. This device contains magnets so please do not store or use the device near magnetic fields. Keep it away from credit cards, implanted medical devices, and other devices that are affected by magnetic fields;
6. To achieve the closing and locking effect, there are multiple magnets at the top/bottom of the device. Please be careful to avoid the inner screen (main screen) being damaged when it is closed due to the attraction of hard ferromagnetic metals to the corresponding magnet positions.