Method for improving unlock speed and mobile terminal

A method for improving an unlock speed and a mobile terminal. The method is used for a mobile terminal in a black screen state, the method comprising: receiving the operation of a user inputting an unlock password (101); and matching the input unlock password with a preset password, and unlocking, after at least a successful match, the display screen of the mobile terminal and waking up the display screen; waking up the display screen referring to the recalling of light-sensing data and color temperature data when the screen of the mobile terminal was woken up previously, to wake up the display screen of the mobile terminal (S102). The method can improve the speed of unlocking the black screen, enhancing the user experience.