A mobile device comprising: an intermediate frame structure having a side edge frame forming a side edge of the mobile device, the intermediate frame structure further comprising a horizontal baffle that has a rim being connected to an interior wall of the side edge frame ; the mobile device further comprising: a screen module having side edges sized to fit the size of the interior walls of the side edge frame , a bottom surface of the screen module being connected to an upper surface of the horizontal baffle when the screen module is assembled with the intermediate frame structure , and each of the side edges of the screen module being attached to a corresponding interior wall of the side edge frame , wherein the screen module comprises: a glass panel having side edges that are attached to the interior walls of the side edge frame , and an upper rim of a side edge of the glass panel is connected to an upper rim of an interior wall of the side edge frame ; a LCD display module adhered to the bottom surface of the glass panel ; and a LCD holder enclosing a side edge and a bottom surface of the LCD display module , an interior surface of the LCD holder is fitted to an exterior surface of the LCD display module , and an exterior surface of the LCD holder is fitted to the interior walls of the side edge frame and the upper surface of the horizontal baffle ; a side edge of the LCD holder is attached to the interior wall of the side edge frame , and a bottom surface of the LCD holder is connected to the upper surface of the horizontal baffle when the screen module is assembled with the intermediate frame structure. a screen module having side edges sized to fit the size of the interior walls of the side edge frame , a bottom surface of the screen module being connected to an upper surface of the horizontal baffle when the screen module is assembled with the intermediate frame structure , and each of the side edges of the screen module being attached to a corresponding interior wall of the side edge frame , wherein the screen module comprises: a glass panel having side edges that are attached to the interior walls of the side edge frame , and an upper rim of a side edge of the glass panel is connected to an upper rim of an interior wall of the side edge frame ; a LCD display module adhered to the bottom surface of the glass panel ; and a LCD holder enclosing a side edge and a bottom surface of the LCD display module , an interior surface of the LCD holder is fitted to an exterior surface of the LCD display module , and an exterior surface of the LCD holder is fitted to the interior walls of the side edge frame and the upper surface of the horizontal baffle ; a side edge of the LCD holder is attached to the interior wall of the side edge frame , and a bottom surface of the LCD holder is connected to the upper surface of the horizontal baffle when the screen module is assembled with the intermediate frame structure. a glass panel having side edges that are attached to the interior walls of the side edge frame , and an upper rim of a side edge of the glass panel is connected to an upper rim of an interior wall of the side edge frame ; a LCD display module adhered to the bottom surface of the glass panel ; and a LCD holder enclosing a side edge and a bottom surface of the LCD display module , an interior surface of the LCD holder is fitted to an exterior surface of the LCD display module , and an exterior surface of the LCD holder is fitted to the interior walls of the side edge frame and the upper surface of the horizontal baffle ; a side edge of the LCD holder is attached to the interior wall of the side edge frame , and a bottom surface of the LCD holder is connected to the upper surface of the horizontal baffle when the screen module is assembled with the intermediate frame structure. <EOS>