The application provides an information processing method and device, a mobile terminal and a computer readable storage medium. The method comprises the following steps: acquiring standard power capacity and consumed power capacity of the mobile terminal in the screen off period if the mobile terminal is switched to a screen on state from the screen off state and the screen off duration of the mobile terminal exceeds the first duration; detecting whether the mobile terminal is abnormal in power consumption according to the standard power capacity and consumed power capacity; if detecting the abnormal power consumption, acquiring a dormancy ratio of a MPSS subsystem of the mobile terminal and the corresponding threshold, and detecting whether the MPSS subsystem of the mobile terminal is abnormal in dormancy according to the dormancy ratio and the threshold. Through the method provided by the application, whether the MPSS subsystem of the mobile terminal is abnormal in dormancy can be detected according to the dormancy ratio of the MPSS subsystem of the mobile terminal and the corresponding threshold when detecting that the mobile terminal is abnormal in power consumption in the screen off state, therefore, the way for detecting the dormancy abnormality of the MPSS subsystem of the mobile terminal is simple and fast.