If the phone frame is made of aluminum alloy and other metal materials, if scratches appear, you can carefully polish them with polishing paper until the scratches become inconspicuous or meet your requirements. Polishing paper can be bought online, which is very cheap. Be careful not to grind the screen with polishing paper.
TPU transparent mobile phone case
If the color plated on the surface of the phone frame is knocked out, you can buy a transparent TPU phone case with the same color as the frame. The thinner the better, you won't notice the phone case if you don't look carefully after wearing it, and it will also cover up the lost color.
Transparent TPU mobile phone case
If the phone frame is bright metallic, buy a transparent TPU phone case. After wearing it, you won't notice that the edge of the phone is broken because it has a reflective effect and feels bright metal.
Silicone phone case
If the phone frame is badly hit and there is a deep depression, when other methods can't handle it, buy an exaggerated phone case made of silicone with a big edge, and completely wrap the phone inside, so that you can never see the broken frame again.
Face it calmly
If you are a calm family, then you will knock when you knock on your mobile phone. Ignore it and treat it as nothing. Some people still use it even if the screen is broken. As long as they can open it and touch the screen, everything will be fine.
Buy a new mobile phone
If you have obsessive-compulsive disorder and your mobile phone is broken, you can't stand it, then buy a new one.