Three Ireland's launching its 5G network today.
Prepay, bill pay and business customers will be able to access the technology on supported devices, with 35 percent of the population initially being covered.
It comes as a major network failure left Three customers without internet service for hours yesterday, however it's not believed to be related to today's launch.
Three is the last major Irish network to turn on the new technology, and Business Post tech editor Emmet Ryan says it's crucial they get it right.
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