Two cuts on the same stretch of fibre optic cable caused major problems for Vodafone customers and businesses across Hawke's Bay on Thursday.
Both landline and mobile customers across the Central North Island were hit by the outage after roadworkers caused "major damage to essential fibre cabling".
Vodafone said both landline and mobile services were restored to large parts of the North Island by about 1.30pm, after some fibre was cut while contractors were removing trees near Napier.
A cable was also subsequently cut near Matamata around the same time, causing widespread outages from about 9am on Thursday.
"These two separate fibre cuts combined have reduced the ability to reroute traffic in the area and have caused a major outage of mobile and fixed connectivity in the central and eastern North Island," a Vodafone spokeswoman said.