Nowadays, smartphones are basically held in the hand. Although they are equipped with protective cases, they will inevitably have some bumps and wear. Severe cases will cause slight or even serious deformation. The most reasonable way to deal with this kind of mobile phone is to replace the middle frame.
For normal wear and slight deformation of the middle frame, you can try to replace it yourself. Of course, you must have experience in disassembling the phone before you can try it. You can buy the middle frame, auxiliary tools and replacement video reference online. It is not recommended to disassemble and assemble the seriously deformed one yourself, because when the motherboard is deformed and stretched and the screws are removed to restore it, it is very likely that the inner layer of the motherboard will be damaged.