The present specification relates to a mobile device and a method for controlling the same. The present invention receives a first text from a memory or a first external device; obtains, from the memory, at least one receiver information including at least one from among the receiver's phone number and the receiver's email address; determines priority on the basis of the obtained receiver information; generates a second text on the basis of the determined priority and the received first text; displays the generated second text to a second external device which corresponds to the receiver information and is different from the first external device.