I'm looking to switch my broadband & phone package from Vodafone to Spark. I've never switched before in NZ, so I just want to confirm that I understand the process.

Sorry if this is a totally dumb question, but am I right in assuming that I just sign up with the new provider and they take care of the transfer? I don't have to cancel my existing service with my current provider (I'm not locked into any contract)?

I just want to make sure I keep my current phone number, and that I don't lose my broadband service for any significant time between the switchover if possible, so I'd be grateful to hear from anyone about whether or not the transfer process is usually relatively seamless.