Abstract: Embodiments of this application provide example permission negotiation methods and apparatuses during communication, and electronic devices. An example first electronic device displays an interface of a currently running communication application, and obtains, in response to the first operation, a permission item restricted for use in a process of communication with a second electronic device. Then, the first electronic device sends a first request to the second electronic device that includes the permission item restricted for use. The first electronic device receives confirmation information of the second electronic device for the permission item restricted for use, and restricts, based on the confirmation information, a locally installed application on applying for the permission item restricted for use.

Abstract: A control device for current switching includes: a universal serial bus on-the-go (USB OTG) interface for connecting to a first device; a universal serial bus (USB) interface for connecting to a second device; a booster current-limiting circuit connected between the USB OTG interface and the USB interface, where the booster current-limiting circuit, the USB OTG interface, and the USB interface form a line for the device to supply power to a device; and a measuring and controlling unit connected to the booster current-limiting circuit, where the measuring and controlling unit is configured to change, after a current switching request is received, a resistance value of a current-limiting circuit in the booster current-limiting circuit, so that the first device supplies a corresponding current to the second device. The control device for current switching and the electronic device can improve universality of the control device for current switching.

Abstract: Embodiments of the present invention provide a battery charging method, related to the field of electronic technologies and invented to shorten the charging time. The method includes: determining, by a mobile terminal, a specification parameter of a battery to be charged; determining, by the mobile terminal, a charging parameter corresponding to the specification parameter according to the determined specification parameter; and charging, by the mobile terminal, the battery to be charged according to the determined charging parameter. Embodiments of the present invention also provide a corresponding mobile terminal. The present invention is applicable to charging of a mobile terminal.

Abstract: A method for protecting an electronic device, where the electronic device includes a control switch for controlling output of a power supply, and the method includes: detecting whether an exception event occurs, and if it is detected that an exception event occurs, generating a control signal for controlling the control switch; and controlling, based on the control signal, the control switch to disconnect an output channel of the power supply. Correspondingly, an embodiment of the present invention further discloses an electronic device. In embodiments of the present invention, effective shutdown can be implemented after an exception occurs on an electronic device, thereby eliminating a potential security risk that an abnormal chip of the electronic device is continuously electrified after the electronic device shuts down because of an exception event.

Abstract: A control device for current switching includes: a universal serial bus on-the-go (USB OTG) interface for connecting to a first device; a universal serial bus (USB) interface for connecting to a second device; a booster current-limiting circuit connected between the USB OTG interface and the USB interface, where the booster current-limiting circuit, the USB OTG interface, and the USB interface form a line for the device to supply power to a device; and a measuring and controlling unit connected to the booster current-limiting circuit, where the measuring and controlling unit is configured to change, after a current switching request is received, a resistance value of a current-limiting circuit in the booster current-limiting circuit, so that the first device supplies a corresponding current to the second device. The control device for current switching and the electronic device can improve universality of the control device for current switching.

Abstract: An electric energy control apparatus, module, and device are provided. The apparatus includes a first module including a first interface, a second module including a second interface, the second module includes the second interface connected to an input end of a power supply unit, an output end of power supply unit is configured to connect to an electric energy input end of external device; the first module includes the first interface connected to an input end of a charging unit, an output end of the charging unit is connected to an input end of power source unit; an output end of power source unit is connected to the first interface; an input end of detection control unit is connected to the first interface, a first output end is connected to control end of the first switch, a second output end is connected to control end of the second switch.