BlackBerry priv crashes, please help

Generally, there are two methods to solve the problem of screen freeze or crash. The first method: press the power button and select restart.

Second method: Press and hold the power button and volume down button until the screen turns black and the blackberry logo appears. If you accidentally press it for a long time, you will enter the fastboot page. At this time, the following interface will be displayed. Select directly An option "continue the bootup" will allow you to enter the system.