Millet 2s after changing the screen can not focus close, after the removal of the inability to focus?

The main problem is Xiaomi 2/2s mobile phone shell after the location of the camera, there is a square black plastic gasket, generally after the demolition of this gasket will not fall out, so the general cover is also directly after the shell closed on the screw.
This installation will lead to the plastic gasket to the camera (stuck), the camera is resisted, inside the lens can not move, of course, can not focus!
The solution is to re-dismantle the machine, the camera position inside the shell to pick out the black plastic gasket, the gasket first set to the rear camera, and then the shell cover, so installed after the problem solved!

Millet 2s after changing the screen can not focus close, after the removal of the inability to focus?