The nitty-gritty on Wi-Fi performance

Wi-Fi can be fickle! While the best in modem technology will certainly help your Wi-Fi experience at home, it’s good to understand why Wi-Fi can be slow or have issues, check your own home set up, and take some steps to fix it.

Tips to improve your Wi-Fi


The most important factor is modem placement. Re-positioning your Wi-Fi modem can make a huge difference to your experience. Here are some tips:

  • Don’t keep your modem in a cupboard or patch panel as the walls can block your modem's signal. Place your modem somewhere near the centre of your house. You will have the best connection if your devices can see the modem.
  • Make sure your modem is standing upright or is positioned the way it is intended – this allows Wi-Fi signals to transmit the best.
  • Keep it away from the kitchen - some appliances such as microwaves can interfere with the signal.

A good rule of thumb is to place your modem in the room where you will be using Wi-Fi the most. Ensure it’s in the best location for your Wi-Fi needs:

  • If gaming is most important to you, your modem is best placed in same room as your PC or game console and connect to the modem via an Ethernet cable.
  • If streaming via TV is most important, place your modem near your TV.
  • If Wi-Fi coverage in the home is most important to you (including streaming video in all parts of your home), place your modem in a central location or by your TV with an additional mesh Wi-Fi system.

Best placement:
Best for general Wi-Fi coverage in the home

NF18 2.4GHz

Poor placement:
Place your modem somewhere near the centre of your house to get the best coverage

Best placement:
Best for general Wi-Fi coverage in the home

NF18 5.0Hz

Poor placement:
Don’t keep your modem in a cupboard as the walls can block some of your router’s signal

Images are indicative of possible coverage but results within your own home may vary

More tips and questions

If your smart TV is using the most of your bandwidth, change your home setup to connect your TV directly to the modem via Ethernet. This will feed the TV directly and free up bandwidth to spread to your other devices.

Every now and then your Wi-Fi might start playing up. Give the modem a kick by turning it off for at least 30 seconds and then back on again.

If you test your connection from a device you should only expect to see the speed of the signal received by that device, not your line speed. If you want to test your line speed, try plugging a computer into the modem and turning off the Wi-Fi (there is a physical button on the back or side of your Slingshot supplied modem). We recommend using www.linetest.nz.

Wi-Fi waves can be absorbed and blocked by walls and metal surfaces. Wi-Fi interference can occur if you live near your neighbours and they are transmitting on the same signal (for example if you live in an apartment).

From 100sqm to 400sqm, Wi-Fi signal gets a lot weaker the further you get from the modem. Larger and multi-story homes will likely have Wi-Fi black spots and require extra gear. Again, there are many Wi-Fi solutions out there to help improve coverage within your home.

Every device has a maximum speed. For example, an iPhone 6 is capable of achieving a greater speed than a Samsung J5. Depending on the device, it can mean you won’t always see the maximum speed of your broadband connection when doing a speed test via a device that is not capable of the full speed.

If you have a large household and only one modem access point, you'll likely be suffering. Multiple access points, such as Wi-Fi extenders, Wi-Fi powerline extenders and Wi-Fi mesh products can spread the bandwidth more evenly between the household and its devices.

After taking a look at your home setup and trying the tips above, the best tip of all is to invest in some extra equipment.

If you live in a large house, a home with lots of obstructions or plenty of people with lots of devices, you'll likely always be prone to Wi-Fi blackspots or have issues sharing the bandwidth with just one access point.

If your Wi-Fi isn’t quite cutting it, investing in some extra equipment can truly make all the difference.

We’ve tried, tested and recommend the Google home Wi-Fi system. Wi-Fi points are placed around your home which work with your current modem to provide fast and seamless Wi-Fi.

The Google home system has awesome features, including:

  • The ability to see which devices are connected at any one time.
  • Parental controls such as Wi-Fi pause – if it’s time for dinner or time for bed.
  • Controls to prioritise a specific device for faster speed.
  • Easy access to your Wi-Fi password and the ability to share it quickly with guests.
  • Network assist technology to ensure you receive the fastest possible speeds by:
    • Monitoring and connecting to the closest access point as you move around the house;
    • Monitoring and Connecting to the least congested Wi-Fi channel.
    • Notifying you if you can improve Wi-Fi performance by moving an access point to a better location.

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