Disable add-on/mod in mobile theme?

[v123shine]

I have 2 theme in my vbulletin
- default web theme
- mobile theme

i want install mod "chatbox" in my default web theme, but i dont want this mod/add-on appear in "mobile theme" ---> how can i do it?

Note: i'm using vb 3.8.x

Please help me
Thank you