A mobile phone implement is capable of hearing a voice from the mobile phone or communicating with the ear and capable of easily loading and unloading the earphone and the cord. The mobile phone implement comprises a neck strap that is capable of being attached to a mobile phone and being suspended from a neck of human being and a fastener. The fastener makes a slider slide towards a direction of the base end portion of the neck strap to carry out an open motion. The mobile phone implement comprises a container section formed between the neck strap and the fastener, an earphone unit having a cord whose plug side cord portion is stored in the container section, and folding means for bending a cord to fold the cord provided to an earphone unit which is capable of being connected to the mobile phone.