I didn't see that one. I've never used Voda, but I do like the way they are doing their plans.
Full RRP divided by 12/24/36 months + Red Plan cost. Leave anytime by paying the remaining cost. Nice.
It pisses me off so much how Optus/Telstra structure their plans.
For example (using the Note 8 which is $1,499RRP)
$40 BYO SIM gives you 15GB of Data + unlimited everything else.
Outright phone - $1,499
Carrier Costs - 24 x $40 = $960
Want a phone...
Now an $85 plan gives you 10GB data + unlimited everything else
Handset Payments are $20 / month
Total monthly is $105
105 x 24 months = $2,520
So yes it's an interest-free loan (actually you pay a small premium in this case) which could be convenient, but it just makes all comparisons hard between carriers, hell even plans. If you wanted an S8+ the $85 plans apparently comes with 12GB data (and the phone is free!)... although in this case if you work the numbers it's actually getting a small subsidy.
It's a similar story for Telstra, I'll probably put together some numbers comparing the plans when they all come out (although Voda needs no explanation and I like it!).
I suppose when they advertise it this way it allows the sales people to say "but the phone is only $20 / month" and given that most people will keep buying a new phone on a new plan forever they get away with it.