A nationwide emergency mobile test has been deemed a success.  

Millions of mobile phones across the country buzzed loudly after receiving an alert last night 

National Emergency Management Agency spokesperson Anthony Frith told Mike Hosking the alert was successfully transmitted to every part of New Zealand that has cellphone reception.  

He says a report came back from telecommunication companies including 2degrees, Spark and Vodafone confirming quickly that it worked. 

Frith says it's a well-oiled machine but it's important to check it is working well , as they don't want to find out in an emergency there is an issue. 

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