I am in the process of evaluating Cingular service and the Nokia 6230
phone. I have been pleased so far but yesterday I get this notice that
SIM card is rejected, I could neither place nor receive calls, I had to
remove and replace the card before it would work. What causes this and
is it something that I will have to do periodically? Should I ask for a
new card or is this normal? I did not drop this phone or otherwise
abuse it. I plan to travel around the 21st and I would hate to have
problems on the road. Thanks in advance.

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