Mobile device case

The present invention relates to a case for a mobile device and, more specifically, to a case for a mobile device capable of listening audio files played in the mobile device through high-performance speakers by embedding the high-performance stereo speakers connected through wired/wireless communicated with the mobile device. The case for the mobile device according to the present invention comprises: a bottom cover closely contacted to a side of the mobile device; and a upper cover which opens/closes a display surface of the mobile device, wherein a communication module that wired/wirelessly communicates with the mobile device or an external device and a speaker or a microphone that is being linked with the mobile device or the external device through wired/wireless communication by the communication module are equipped in the upper cover.