A mobile terminal 10 includes a fixing member 20 which fixes a plate shaped member 18 to a case 13 of a casing 12. The fixing member 20 is formed substantially in the shape of a frame including a first member 21 to a fifth member 25 extending along a first side surface 35 to a fourth side surface 38 of the case 13. The first member 21 to the fifth member 25 have sectional forms which are engaged with edge parts 18B of the plate shaped member 18 and engaged with stepped surfaces 46 of the case 13. The fixing member 20 is formed to be deformable so that a dimension L1 of a space between the fourth member 24 and the fifth member 25 may be increased or decreased.