Hania said, however, it is more likely that a network error or system failure caused the problem.

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The problem for the network operator (or airtime provider, whichever you prefer) is that they have to provide a subsidy to the consumer in order to get them using an iPhone.

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In an Ofcom survey 78% of those using net phone services which cannot connect to the emergency services thought that such a call was already possible on that network or were unaware that there might be a problem.

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