Help Some Kind Of Sod

Jan 17, 2017
Hello yesterday arrived my xiaomi 3s from *******.
Everything perfect, but it have a problem that is realy annoying.

When It gets in sleep mode, I can't unlock It ou awake him fast, I press the buttons and use the fingerprint but the screen remain black.
Despite this I can ear all the sounds or notifications and even the ring of an incoming call.

Anyone with the same problem?