If you don't carefully track your data usage, you can easily end up paying for a phone plan that has more data than you actually need. Vodafone is offering a workaround of sorts with its new Data Workout option, which lets you essentially use unlimited data for the first two months so you can calculate your needs.
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This is quite a neat idea, though the downside is that you still have to sign up for a 12 or 24 month contract. We're firmly of the belief that a prepaid plan is often better value. Telstra launched a slightly similar offering recently, offering 25GB extra in the first month to help you set up a new device.
Vodafone is also adding an option for automated data top-ups: if you set this up, whenever you exceed your allowance you'll automatically be charged $10 and given an extra 1GB. This is similar to the approach Optus introduced last year, with one key difference: Optus does this automatically, while Vodafone is opt-in. We think the latter is a better approach.