Civil Defence has tested its emergency mobile phone alert system this evening.
Four million phones were expected to receive the Civil Defence emergency test alert. Photo: 123RF
Between 6pm and 7pm, mobile phones capable of receiving the alert emitted a loud sound and a message appeared on screen.
The sound of the test alert was distinct and noisy, but was intended not cause too much fright or distraction to anyone driving or otherwise preoccupied.
Four million phones across the country were expected to pick up the test alert for emergencies.
People did not need to sign up to receive the message - the system used broadcast technology to send alerts to mobile phones in specific locations.
The Civil Defence alert showed this message on mobile phones. Photo: RNZ
Civil Defence and Emergency Management director Sarah Stuart-Black said the annual tests were an opportunity to increase coverage of the broadcast and make sure the system worked.
Only six out of 10 phones picked up the alert last year.
However, she said the 2018 percentage rate was considered a success and exceeded expectations, given that it was only the second year the technology had been used in New Zealand.
Listen to the interview with Sarah Stuart-Black on Morning Report.
Emergency management alert test on Sunday