Ever notice your internet slows down during a video call — or when the microwave is running? That’s not a coincidence. Many common household items can interfere with Wi-Fi signals, degrading your connection without you realizing it.
Even with a powerful router, physical obstacles and electronic interference can make the signal weaker in certain rooms. But the good news is: small changes in setup can often solve the issue.
According to telecom technicians, one of the main causes of poor Wi-Fi is the invisible noise created by everyday devices. Here’s what to look out for — and how to optimize your network.
Device | Why it interferes | What to do |
---|---|---|
Microwave oven | Operates on 2.4 GHz, same as Wi-Fi | Keep router away from kitchen |
Old cordless phones | Emit radio signals in Wi-Fi bands | Switch to digital (DECT) |
Large mirrors or fish tanks | Reflect or absorb signals | Avoid placing between router and devices |
Bluetooth devices | Compete for 2.4 GHz bandwidth | Limit simultaneous use |
Concrete or reinforced walls | Block or distort signals | Use extenders or mesh systems |
Fun fact: A microwave can disrupt Wi-Fi for up to 10 feet, especially during online gaming or Zoom calls on a 2.4 GHz connection.
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