Why doesn't Hi work on Prepay or Pay-as-you-go plans?
A big frustration for us (and I'd say quite a few users too) is that our service doesn't work on all mobile plan types.
Prepay plan (or pay-as-you-go) don't allow forwarding for busy or missed calls to our service. On a worldwide basis most mobile operators follow this policy.
What should I do?
There aren't really many options other than moving to a monthly plan.
We are going trail the idea of working with carriers to make this process as affordable as possible for our users so email firstname.lastname@example.org your country details if you want to find out more.