broke

Hi guys , I've a lot of problems with my xiaomi redmi note 3 (SD version ) . All the sensors don't work and When I try to calibrate them , the test fails as there aren't any sensors . Is this an hardware problem or is a driver problem ?

Hello, my mobile , xiaomi mi4, it's turning down and freezing on mi screen(when you turn on the mobile ) . I think it is the lock button is broke because if you touch it a little, it blocks your mobile and after this the mobile turn off . Are there any programs to disable buttons or change...