Abstract: An electronic device includes a pressure sensor. When a display screen is in an activated state, the pressure sensor detects a pressure on a valid area of a display screen of the electronic device. The electronic device reads a value of the pressure from the pressure sensor. If the value of the pressure is more than a predefined pressure value, the display screen is unlocked.

Abstract: In a method to recover deleted files of an electronic device, properties of a file are stored into a file list of a storage system of the electronic device when the file is deleted from the electronic device. The method compresses the deleted file, and stores the compressed file in a hidden partition of the storage system. The method further obtains the compressed file from the hidden partition when the deleted file needs to be recovered. Then, the method decompresses the compressed file, and stores the decompressed file to an active partition in the electronic device.

Abstract: In a method to unlock a touch screen of an electronic device, a press operation is received from the touch screen pressed by a user. The touch screen includes an unlocking interface. The method determines whether the press operation is within a press area of the unlocking interface. When the press operation is within the press area, the method further controls an indicator of the unlocking interface to move at a default speed, and locates a stop position of the indicator on the touch screen when the indicator stops moving. The method unlocks the touch screen when the stop position is within a predefined area of the unlocking interface.