A mobile device includes a first housing, a second housing, a bias member, a first stopper and a second stopper. The second housing is slidably coupled to the first housing in a sliding range. The bias member biases the second housing from a middle position of the sliding range to one end of the sliding range. The first stopper is provided on the first housing, is connected to a ground of the first housing, and has electrical conductivity. The second stopper is provided on the second housing, has electrical conductivity, and comes into contact with the first stopper to define the one end of the sliding range.