Best Mobile Phone Deals in NZ (September 2025)

Below we cover the best deals from mobile phone providers across prepaid and monthly plans. The award we think delivers the best value is our Deal of the Month!

Kogan

Kogan is offering a big discount on two of its monthly plans:

• 15GB plan + unlimited NZ/OZ calls & texts: $25 (usual price $35)
• 365-day 384GB (32GB/m) + unlimited NZ/OZ calls & texts: $330 (usual price $490)  – this works out to just $27.50/m, which is great value.

Plus Kogan’s monthly plans renew every 31 days, as opposed to every 28 days, like some other plans.

2degrees

Receive a one-off 7.5GB of rollover data if you move your existing number over to a 2degrees monthly or weekly prepaid plan with a data limit.

Kiwi Mobile

Kiwi Mobile is offering half price for six months across both of its mobile plans, which charge per day:

• Choice: 5GB plan + unlimited NZ/OZ calls & texts: $0.65 (usual price $1.30 per day)
• Choice Lite: 1GB + unlimited NZ/OZ calls & texts: $0.295 per day (usual price $0.59 per day)

Mighty Mobile

Mighty Mobile is offering its Primate members discounts of 30% on its 365 plans.

Primate memberships cost $116 if you pay quarterly or $69.50 if you pay for 12 months. However, the savings can be quite considerable:

• Unlimited Fast Plan: speeds up to 10Mbps – $279.30 (usual price $39, a saving of $119.70)
• Unlimited Faster Plan: speeds up to 50Mbps – $349.30 (usual price $499, a saving of 149.70)
• Unlimited Fastest Plan: max speed data – $559.30 (usual price $799, a saving of $239.70)

One NZ

If you bring over your mobile number and join on a $13 or above MyFlex Prepay plan, One NZ will give you 5GB of free data.

One NZ is also offering its Satellite TXT service free for a limited time across all its prepaid and monthly plans, plus as a free trial for non-One NZ customers.

Rocket Mobile

If you bring over your mobile number, Rocket Mobile is offering savings of $10 per month for 12 months across three of its plans:

• Rocket Unlimited: at 10Mbps Unlimited NZ/OZ 20GB: $30 (usual price $40)
• Rocket Plus Unlimited: at 40Mbps Unlimited NZ/OZ 20GB: $35 (usual price $45)
• Rocket Max (5G ready) Unlimited: no speed cap Unlimited NZ/OZ 40GB: $60 (usual price $70)

Skinny

Skinny has a pretty cool deal on its new 52-week plans. The data/calls/texts allowance on each plan rolls over every 28 days:

• 4GB rollover data + 300 rollover minutes/unlimited texts to NZ/OZ: $296 (usual price $351)
• Unlimited data (10GB cap at max speeds) + unlimited minutes/texts to NZ/OZ: $439 (usual price $520)

Skinny is also offering a one-off 8GB of bonus data if you move your existing number over to a Skinny plan $17 or above. Note the data is not rollover data.

Spark

Spark is offering a one-off 5GB of bonus data if you move your existing number over to a prepaid plan. Note the data expires after 90 days. Plus, move to a Spark prepaid plan before 29/09/25 and receive double data.

Spark also offers free data for Spotify music on its prepaid plans $16 and over, plus Spotify discounts across all its plans, including free Spotify Premium (worth $18.99/m) on its $90/m Unlimited Data plan.

Warehouse Mobile

If you’re a new customer bringing over your number to a $15+ plan, you’ll receive 10GB of free data.

Phone plan discounts and deals: what to consider

Mobile phone providers are always offering incentives to new customers. However it’s important to not get blinded by the initial discount, and to consider the longer-term implications of your phone plan purchase. Points to consider:

Discount length

Is the discount a one-off, or for the length of the plan? Many plans revert to their original price after the initial discount period meaning, in the long run, you could end up paying more than opting for a cheaper plan without an initial discount.

Data, calls and texts

Does the plan meet your needs in terms of its data, calls and text allowances? There’s no point buying an expensive endless data plan if you rarely make use of your allowance. Or purchasing a cheap, limited plan that ends up costing you extra in top-up packs.

Check the small print

Mobile phone deals always come with Ts&Cs, and it’s important to read them, as they could reveal hidden costs. Also make sure you’re familiar with the conditions of your existing phone plan, as switching to another plan, even with the same provider, could incur penalties.

FAQs about phone plans and deals

Compare prepaid phone providers for free with Canstar!

About the author of this page

Bruce Pitchers is Canstar NZ’s Content Manager. An experienced finance reporter, he has three decades’ experience as a journalist and has worked for major media companies in Australia, the UK and NZ, including ACP, Are Media, Bauer Media Group, Fairfax, Pacific Magazines, News Corp and TVNZ. As a freelancer, he has +worked for The Australian Financial Review, the NZ Financial Markets Authority and major banks and investment companies on both sides of the Tasman.
In his role at Canstar, he has been a regular commentator in the NZ media, including on the Driven, Stuff and One Roof websites, the NZ Herald, Radio NZ, and Newstalk ZB.
Away from Canstar, Bruce creates puzzles for magazines and newspapers, including Woman’s Day and New Idea. He is also the co-author of the murder-mystery book 5 Minute Murder.