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Old 08-20-2006, 11:47 AM   #6 (permalink)
Latino Hasta La Muerte
Join Date: Jan 2005
Location: Denville, NJ.
Model: Class
OS: 10.3.1
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Carrier: Verizon
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It's possible that an older SIM card won't work in the newer phones and Blackberries. You might need to get a new one from a T-Mobile dealer. Should be free. Also, consider resetting the Blackberry. That should wipe any leftover corporate IT security stuff that may be lingering behind the scenes.