SinB and Baekho cutely text each other as 'Beauty' and the 'Beast' in the Cell Phone KODE series. Members of Viviz and NU'EST created hidden identities to engage in interesting and fun chats.

Cell Phone KODE is a series in which artists and entertainers appear with a 'hidden' identity, and then they start to text through the app to get to know each other a bit, ask questions, and then finally to guess who is on the other side of the chat.