iPhone users have been left out of a trial to update the myki ticketing system – and risk being excluded from the initial rollout as the government struggles to make a deal with tech giant Apple.

The state government announced on Sunday a trial for a new cardless mobile myki system which would allow commuters to top-up and touch on and off public transport using their smartphones.

But the test run only involves 4000 Android users, leaving out a large proportion of the state's public transport users.

Myki cards could be a thing of the past if the trial is successful. Credit:Rebecca Hallas

Almost half the Victorian population (45 per cent) uses iPhones, according to data from the International Data Corporation.