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Old 07-02-2009, 11:53 AM   #2 (permalink)
NJBlackBerry
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Join Date: Aug 2004
Location: Somewhere in the swamps of Jersey
Model: i5s
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AT&T does not support UMA.
UMA is voice over WiFi. If you are in an area with poor cellular coverage, your BB can make calls over a suitable WiFi network.
But not on AT&T.
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