Hi! Sorry for the late response, it's been a busy week - as far as I can recall, we haven't had any specific cell phone codes posted, but this one could reasonably pass as one? (Assuming that the text-bubbles-back-and-forth is what you are looking for?) Generally, miscellaneous tag is where any odd-ball codes like that can be found.

If that's not what you're after, I'm afraid that the only thing I could suggest is looking at the journals/communities of the code makers who post in this community, and seeing if any of them will take requests.