A communication method for mobile devices, characterized by comprising: obtaining additional instruction information that corresponds to a first user operation during communication by sensing the first user operation, the first user operation comprising at least one of a voice-activated operation or a one-step operation on a first mobile device; transmitting the additional instruction information to a second mobile device, so that the second mobile device recognizes the additional instruction information to further notify a second user of the second mobile device of the first user operation; wherein transmitting the additional instruction information to the second mobile device comprises: inquiring pre-stored first correspondence between additional instruction information and encoding information of the additional instruction information, to obtain the encoding information to which the additional instruction information corresponds, wherein when the additional instruction information is an emoticon, encoding of the emoticon is set to be different with encodings of emoticons in existing chat tools, by defining a new set of emoticon fields and establishing a new set of correspondence between the emoticon and the encoding of the emoticon to define a marker start byte; and transmitting the encoding information of the additional instruction information to the second mobile device. obtaining additional instruction information that corresponds to a first user operation during communication by sensing the first user operation, the first user operation comprising at least one of a voice-activated operation or a one-step operation on a first mobile device; transmitting the additional instruction information to a second mobile device, so that the second mobile device recognizes the additional instruction information to further notify a second user of the second mobile device of the first user operation; wherein transmitting the additional instruction information to the second mobile device comprises: inquiring pre-stored first correspondence between additional instruction information and encoding information of the additional instruction information, to obtain the encoding information to which the additional instruction information corresponds, wherein when the additional instruction information is an emoticon, encoding of the emoticon is set to be different with encodings of emoticons in existing chat tools, by defining a new set of emoticon fields and establishing a new set of correspondence between the emoticon and the encoding of the emoticon to define a marker start byte; and transmitting the encoding information of the additional instruction information to the second mobile device. inquiring pre-stored first correspondence between additional instruction information and encoding information of the additional instruction information, to obtain the encoding information to which the additional instruction information corresponds, wherein when the additional instruction information is an emoticon, encoding of the emoticon is set to be different with encodings of emoticons in existing chat tools, by defining a new set of emoticon fields and establishing a new set of correspondence between the emoticon and the encoding of the emoticon to define a marker start byte; and transmitting the encoding information of the additional instruction information to the second mobile device.