The Data Protection Minister Dara Murphy is calling on mobile operators to invest more in their networks to avoid a repeat of yesterday's outage on the Three network.
Three has apologised for an electrical fault that affected 1.5 million of its customers.
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People reported intermittent 2G and 3G services over a number of hours yesterday afternoon.
A full evaluation of what happened is now being carried out but it's not yet clear whether customers will be compensated.