1results about "Subscriber signalling identity devices" patented technology

An accessory device for assisting grip of an electronic device comprises: an extendable body which can be attached to the outer surface of the electronic device; a display disposed on the extendable body; one or more coils; a wireless communication circuit; at least one processor; and a memory including one or more storage media storing instructions. The at least one processor is configured to: receive data from the electronic device through the wireless communication circuit; obtain power from the electronic device through the one or more coils; and display content through the display on the basis of the power obtained from the electronic device through the one or more coils.