I've just moved back into my former Auckland home after 7 years in Wellington and was disappointed to find virtually zero cellphone reception still despite living in the heart of Schnapper Rock (all the coverage signals say excellent 3G and 4G but they also said that 7 years ago as well!). 

When I was here last time I had a sure signal but that is long gone so dialled up Vodafone chat to ask them what my options were - thinking that if nothing else they could supply me a VOIP phone to call forward to.  The first person I chatted with suggested a third party booster but the second person told me that Vodafone was offering a "new" 3G/4G booster from 1 Jun 2021 and that they will eventually be offering a 5G booster as well.

They were unable/unwilling to provide any further details such as technical specs or if there will be a cost but seemed pretty clear that it was rolling out very shortly.

Has anyone else heard anything on this?