Wireless and household appliances

Many devices which don’t even use WiFi still emit radio signals in the same bands (2.4 GHz or 5 GHz) as your WiFi router. Did you know your microwave oven functions on the 2.4 GHz band? That could be interfering with your Internet experience, slowing, or disrupting your connection.

Here are some wireless appliances that can cause signal interference:

    • Microwave ovens

    • Bluetooth devices

    • Cordless phones

    • Wireless speakers

    • Neighbors’ wireless network

    • Baby monitors

    • Wireless cameras


In many cases, the problem can be fixed by purchasing a WiFi router that operates simultaneously at 2.4 GHz and 5 GHz bands.

If your WiFi router only operates on 2.4 GHz, it might be possible to fix the problem by using a different channel (1, 6, or 11) to avoid the one causing interference. If you think that a particular wireless appliance is the source of signal interference, check whether it offers an option to change its own channel.

Physical obstacles

The construction materials used for walls, ceilings, or partitions in your home are among the most common causes of a poor WiFi signal.

Here are the interference levels of some common building materials:

    • Low interference level: wood, glass, synthetic material

    • Medium interference level: water, bricks, marble

    • High interference level: plaster, concrete

    • Very high interference level: metal


Extend your network by adding an extra Wi-FI access point rather than relying on your primary router to penetrate all these materials. For instance, with Nokia WiFi, you can add additional Beacons to extend your network in the areas with high interference levels. The best technology to expand your WiFi network is to use a mesh network, rather than a repeater or extender.