Thanks Afzal,
Do I understand correct that if you have an account only the registered IMEIs are costs-charged? So e.g. :
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Somebody steals my SIM cards,
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I deregister the related IMEIs in our account and we are no longer charged once deregistered
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The thiefs could re-use the SIM card in their own TMO account and be charged for usage
(and in the end we only need to get some new SIMs?)
Is that how it works?