WI-FI® INTERFERENCE

Things that block your
Wi-Fi signal

If you’re not getting the internet performance you expect over Wi-Fi, you may be dealing with common Wi-Fi interference.

Wi-Fi works with wireless radio wave technology, so things that interfere with wireless signals will affect your Wi-Fi signal strength and reduce your Wi-Fi range.

If you’re experiencing diminished performance from Wi-Fi interference, you may not get to enjoy the full experience of high-speed internet on your Wi-Fi devices.

By learning more about Wi-Fi interference and the types of materials that can block your signal, you can avoid having an obstructed Wi-Fi signal.

Band competition may cause Wi-Fi interference

Your Wi-Fi connection may be affected by other devices that compete for the same wireless frequencies of 2.4 GHz and 5 GHz. Since 2.4 GHz frequency travels further, devices on the 2.4 GHz band are more susceptible to Wi-Fi interference than devices operating on the 5 GHz band. Wi-Fi extenders can help extend your 5 GHz network so your devices can avoid using the 2.4 GHz network. Read more about Wi-Fi extenders.

Nearby routers

Routers in the United States use one of eleven channels on the 2.4 GHz band. If your neighbors have a Wi-Fi router on the same channel within range of your router or Wi-Fi gateway, it can cause interference.

If there are nearby routers using the same Wi-Fi channel, you can avoid interference by changing your Wi-Fi channel. Not only will using a different Wi-Fi channel possibly improve your Wi-Fi performance, but it can also help you avoid interfering with your neighbor’s Wi-Fi signal.

Cordless phones

Some cordless phones use the 2.4 GHz band and can cause Wi-Fi interference.

If your cordless phone is causing Wi-Fi interference, consider switching to a cordless phone that uses the 5 GHz, 1.9 GHz, or 900 MHz bands.

Baby monitors

Baby monitors often use the 2.4 GHz band and can cause interference on your home Wi-Fi network.

Like with cordless phones, consider switching to a baby monitor that doesn’t use the 2.4 GHz band.

Dense walls and furniture may cause Wi-Fi interference

Having to go through physical objects can weaken Wi-Fi signals, which means walls can affect Wi-Fi. A common cause of reduced Wi-Fi performance is dense walls and furniture in between routers and wireless devices.

In addition to dense walls and objects, conductive materials can block Wi-Fi signals the most, causing Wi-Fi not to work in some buildings.

Wall and furniture thickness

Your signal strength may be affected if your Wi-Fi signal goes through thick walls and furniture. Depending on how dense your walls are and what they’re made of, the layout of your home may create weak spots in your home network.

The best solution is to strategically place your router so that the Wi-Fi signal doesn’t have to go through an excessive number of walls and furniture. Wi-Fi extenders can decrease dead zones and weak spots.

Metal and water surfaces

Metal and water both conduct electricity. This means that electrical signals can be absorbed when they pass through the metal in walls and roofs, bodies of water, or other metal surfaces.

When choosing a location for your router, you may want to be mindful of metal surfaces and bodies of water. For example, the reflective metal backing behind the glass in mirrors can sometimes absorb the electromagnetic waves from routers.