Vodafone Hutchison Australia lost over a million subscribers in the past 12 months and now has fewer than 5 million users.

Vodafone Australia is the nation's third largest mobile telecommunications company and a joint-venture between the UK's Vodafone Group and Hong Kong-based Hutchison Whampoa limited.

New Vodafone Australia chief Inaki Berroeta hasn't committed to reigniting customer growth for the company in the short term.

According to Vodafone Group's global results its Australian venture lost 44,000 customers in the three months ending March 31, 2014 to hit 4.96 million customers.

This was down from the 6 million customers Vodafone Australia had a year earlier.