Possible Clues:

• Texter's icon
• Smiley face in a text, e.g
• Tiny cake, maybe
• Prayer hands, e.g
• 'Sweat smile' or 'money-mouth face,' e.g
• Image in a text
• Symbol such as Thinking Face
• Folded Hands symbol, e.g
• Loudly crying face, for one
• Yours may be a happy face