Why is the front cover of the Redmi 13 easily scratched?

The sides of the front case on the Redmi 13 are made of plastic, which is designed to protect the screen from side impacts. The plastic material is softer than the metal material and will provide some cushioning to protect the screen from being damaged. However, it will produce scratches on the surface when it encounters objects made of harder materials, such as friction with the keys in the pocket.
It is recommended to use a protective case which not only protects the screen but also protects the entire body of the phone, reducing the risk of damage if the phone is dropped. Meanwhile, avoid putting the phone in your pocket or bag with hard objects to minimize scratches.