Early in 2008, it was emphasized that sending messages through public networks will draw the attention of third parties such as attackers, perhaps causing attempts to break and reveal messages. Thus, cryptography was initially used to send a text message by producing cipher text. Although cryptography provides confidentiality for sent message, but the cipher text that is generated appears nonsense for the attacker, which leads to being identified as the sensitive information. In order to overcome this problem, this paper introduces a novel mobile steganography technique, based on using emoticons to deliver sensitive information as a daily emotion monitoring application. Based on achieved result, 88 characters can be embedded and sent to the recipient successfully in a hidden way.