According to various sources, Apple doesn't allow any of its telco partners to offer users 24-month warranties or let any third party repair its devices.
Vodafone signed an agreement with the ACCC in May of last year, with Telstra following suit in October, to offer 24-month warranties but this not including the iPhone.
Vodafone had to come to an compromise with Apple involving customers with faulty iPhones outside of Apple's 12-month warranty, who could purchase a refurbished iPhone for $288.
Optus has now one-upped the other telcos and agreed to cover the repair costs of a faulty device for the second half of a customer's 24 month warranty at its own cost.
The move is the latest in bad news for Vodafone but will surely be welcomed by Optus customers - especially those lucky enough to tout an iPhone.