The invention discloses a
mobile phone usable as a learning platform, a locatable media player and a file
processing and searching method thereof. The
mobile phone of the invention has a function of identifying the keywords in short messages or electronic books; a user can decide which keywords should be identified, or the keywords can be made by an
electronic book publisher; when a short message or an
electronic book is opened, a short message reader or an
electronic book reader can analyze whether the content includes keywords representing the electronic book or not; if so, the user can directly open the electronic book in the reader and display the content of an appointed chapter, and also can open an audio / video file and locate the audio / video file to the appointed chapter to play. During the playing of the audio / video file, when the user presses the forward or backward button, the media player of the invention directly goes forward to the start point of the next
sentence or scene, or goes backward to the start point of the previous
sentence or scene to play; and when the user presses the replay button, the player directly goes backward to the start point of the current played
sentence to play.