Piranha Mobile Sim Card

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Originally Posted by DRNewcomb

I remember that Celtrek also charged for unanswered callback calls. It does not seem unreasonable to me because the company gets charged for the time you are waiting for the other party to answer. It's the downside of using USDS callback technology. The alternative would be to use a regular roaming system at much higher cost.

sure, but most of the other companies calculate this and dont charge for the incoming callback.
Of course everybody has to take his own decision - but for me this is definitely a no-go criteria for a SIM card.