If the mobile phone screen holder is not seriously unglued and does not affect the daily use of the mobile phone, it is also OK not to change the glue or screen.
If the mobile phone screen holder is seriously unglued, affecting daily use, then you have to go to the brand after-sales service center or mobile phone repair shop to replace the screen glue.
Mobile phone screen is very fragile, should pay attention to protect mobile phone screen when using mobile phone. The edge of the screen of the phone is not dangerous, which may lead to more water into the ash, affecting the touch effect.