...
contact your network operator or service provider
for the availability of Over-The-Air services.
You
can send and receive a person’s contact information
as a business card either via IR or as an Over The Air
(OTA) message if supported by the network.
Receiving a Business Card
Make sure that your phone is ready to receive data through
its IR port, see Infrared in the Nokia 8910i printed User
Guide.
The user of the other phone can now send the name and
phone number via Infrared.
When you have received a business card via IR or as an
OTA message, press Show. Press Options and
select Save to save the business card in the phone’s
memory, or Discard to discard the received business
card.
Sending a Business Card
You can send a business card via IR or as an OTA message
to a compatible phone or other handheld device that supports
the vCard standard.
Search for the name and phone number you want to
send from the phone book, press Details and
Options and select Send bus. card.
To send the business card via IR, make sure that
the other phone or the PC is set up to receive data
via its IR port and select Via infrared.
To send the business card as an OTA message, select Via
text message.
You
may need to... 
