When 9210 sends Smart Message with vCalendar, and if the vCalendar description includes characters like "", UTF-8 is used as the character-set. This is same for other newer Nokia phones like 6210.
(Older Nokia phones like 8210 do not support UTF-8.)
Although sms3_0_0.pdf does not mention about UTF-8 at all,
Why do Nokia newer phones tend to support UTF-8, not ISO-8859-1 ?
Any newer specification for Smart Messaging other than sms3_0_0.pdf ?
Moreover, if the table in "3. Which Nokia phones support Smart Messaging?" of Smart Messaging FAQ includes information for character-sets used for non-ASCII codes, it is useful. How do you think ?