Mobile signal · NZ guide
Are mobile signal boosters legal in NZ? Only if your network has approved them.
Plenty of boosters sold online say they work on every NZ network. The industry rule is that every mobile booster must be approved by the network that owns the frequencies. Here’s how to check, and the fix that often works better indoors.
The short answer
A mobile signal booster (also called a repeater or amplifier) is only allowed in New Zealand if the mobile network it boosts has approved it. The Telecommunications Forum, the industry body for NZ’s networks, says approval is mandatory for every mobile booster.
How to tell if a booster is approved
- Ask your mobile provider first. Radio Spectrum Management (the government regulator) advises checking with your provider before you buy anything. They can tell you what’s approved for your location.
- Look for named network approval. “Works on all NZ networks” is not the same as “approved by” a network. If the seller doesn’t say which network approved it, assume it hasn’t been.
- Know the approved option. The Telecommunications Forum names CEL-FI boosters sold by Powertec as approved for NZ networks. In June 2026 Powertec launched the CEL-FI ROAM R41-VB, approved by Spark, for vehicles, small homes and apartments.
Indoors, Wi-Fi Calling often fixes it for free
If the problem is dropped calls inside the house, office or shed, you may not need a booster at all. Spark, One NZ, 2degrees and 2talk Mobile all support Wi-Fi Calling: your phone makes normal calls and texts over your Wi-Fi when the mobile signal is weak.
What it costs
Calls and texts come out of your plan as usual (Spark and One NZ say there’s no extra fee), and a call uses about 1MB of data a minute.
What you need
A compatible phone with up-to-date software, Wi-Fi Calling turned on in settings, and Wi-Fi that reaches the rooms where you take calls.
Where it falls down
A weak Wi-Fi signal in the back bedroom or the shed means dropped Wi-Fi calls too. The Wi-Fi has to be strong everywhere you’ll be on the phone.
One thing to know
Emergency calls still try the mobile network first. 2degrees notes that without mobile coverage you won’t receive Civil Defence emergency alerts.
How we help
We make Wi-Fi Calling work by making the Wi-Fi work: mesh access points wired back with Cat6, placed where the dead zones are, and speed-tested in every room.
- Mesh Wi-Fi setup for homes where calls drop in some rooms.
- Business Wi-Fi for offices and workshops where staff can’t take calls at their desks.
- Starlink for rural properties where there’s no good internet to run Wi-Fi Calling over.
- Cabling out to garages, sheds and sleepouts, so the Wi-Fi reaches them too.
We cover Auckland, Napier and Hastings, and Tauranga.
Questions about boosting mobile signal
Can I buy a mobile signal booster online in NZ?
You can buy one, but you should only use one your network has approved. Check with your mobile provider before you buy.
Is it illegal to use an unapproved booster?
The Telecommunications Forum says approval is mandatory, and Radio Spectrum Management warns of legal consequences. The risk isn’t worth it, because an unapproved booster can disrupt calls for everyone nearby.
Will Wi-Fi Calling work on my phone?
Many phones support it, but check your network’s compatible-phone list and update your software. Then turn it on in your phone’s call settings.
My Wi-Fi is the problem too. What now?
That’s the job we do every day. A plug-in extender usually makes it worse; wired mesh fixes it. Why extenders don’t fix dead zones.
Sources
Calls dropping inside?
We’ll get your Wi-Fi strong in every room so Wi-Fi Calling just works. Fixed written quote within 24 hours.
See mesh Wi-Fi setupCall 0800 222 546
