Due to performance and layout issues, the pop-up chat has been disabled on the following user agents:
Android
BlackBerry
Blazer
BOLT
SymbianOS
Doris
Mobile and Phone agents (this is very general, I agree)
Fennec
GoBrowser
Iris
Maemo
MIB/2.2
Minimo
NetFront
Opera Mini or Opera Mobi
SEMC
Skyfire
Teleca
uZardWeb
If you want to make a special case for your device, do provide me with technical information on it.