Nokia N76 - Manual (Page 109)

Messaging
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Memory in use —If a compatible memory card is inserted
in the device, select the memory where you want to save
your messages:
Phone memory or Memory card .
IM—instant messaging
Press , and select Applications > IM .
Instant messaging (network service) allows you to
converse with other people using instant messages and
join discussion forums (IM groups) with specific topics.
Various service providers maintain compatible IM servers
that you can log in to after you register to an IM service.
Service providers may differ in their support of features.
Before you can use instant messaging, you must define the
settings to access the service that you want to use. You
may receive the settings in a special text message from the
service provider that offers the IM service.
For more information on instant messaging, see the guides
for your device at www.nokia.com/support or your local
Nokia website.