Abstract: An auxiliary terminal-control apparatus, where the apparatus includes a back plate sticker, a control key embedded into the back plate sticker, a communications module, and a control module. The control module is configured to recognize a target operation on the control key, and generate, based on the target operation, a corresponding target operation instruction, where the control key includes a roll ball and/or a key, operations on the roll ball include a roll operation and a press operation, and an operation on the key includes a press operation; and the communications module is configured to establish a communication connection to a terminal device to send the target operation instruction to the terminal device, where the target operation instruction is used to operate an application program on the terminal device or trigger a service.

Abstract: This application provides an auxiliary terminal-control apparatus, where the apparatus includes a back plate sticker, a control key embedded into the back plate sticker, a communications module, and a control module. The control module is configured to recognize a target operation on the control key, and generate, based on the target operation, a corresponding target operation instruction, where the control key includes a roll ball and/or a key, operations on the roll ball include a roll operation and a press operation, and an operation on the key includes a press operation; and the communications module is configured to establish a communication connection to a terminal device to send the target operation instruction to the terminal device, where the target operation instruction is used to operate an application program on the terminal device or trigger a service.