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Old 02-10-2006, 03:16 PM   #4 (permalink)
CrackBerry Addict
Join Date: Feb 2005
Model: 8800c
Carrier: Cingular
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IM can be done with either data or SMS text messages. The latter is not considered data and will be an extra charge in most cases. Some of the T-Mobile plans with come bundled with phone minutes, unlimited data and unlimited SMS.

If you use the T-Mobile IM Client for the BB, it uses SMS so you'll need the appropriate text package. If you go with a third party IM program, most use data so you won't uses any sms text messages.

Regards-Michael G.