Lawyers are preparing to mount a class action against Vodafone after years of complaints about the telecommunications provider.
Law firm Piper Alderman on Monday announced plans to proceed with the action but did not reveal further details.
Piper Alderman lawyers will outline details of the legal action at a media conference in Sydney on Tuesday morning.
Litigation fund LCM managing director Patrick Coope is also due to attend the conference.
The legal move comes more than a year after Vodafone said it was working hard to improve its service.
This followed a damning report that outlined more than 12,000 complaints ranging from patchy network coverage to poor customer service.
Last month Vodafone decided to wind up its Crazy John's mobile phones and accessories brand and said as many as 300 jobs were at risk as the company decided how it could deploy staff.
Telco joint venture operator Hutchison Telecommunications Australia (HTA) is one half of the Vodafone Hutchison Australia (VHA) joint venture.
The other equal joint venture owner is Vodafone PLC.
The joint venture was formed in June 2009 after regulatory and shareholder approval.
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