I've noticed that CC isn't available on Tapatalk, which is a mobile forum posting app. It's a plugin you add to the forum (compatible with phpBB) and is totally free. The function would really help to increase my level of activity on the site (just for pure convenience purposes) and I'm sure would make it easier for others.
I'm sorry if this has been attempted in the past and/or there are reasons that I'm not aware of why this wouldn't work.