Networking Real life

Why Wi-Fi Slows Down When Everyone Is Online

You will meet Wi-Fi interference before you even get home tonight

Lesson notes

Key points

Your hostel room: Dozens of routers share the same 2.4 GHz channels, so frames collide and get resent.
A packed lecture hall: Hundreds of phones contend for one access point, so each device waits longer to transmit.
Your kitchen microwave: Microwave ovens leak energy near 2.4 GHz, briefly drowning out nearby Wi-Fi signals.

Takeaway: Wi-Fi is a shared medium: more devices and noise mean slower links.

Quick check: Which household appliance commonly interferes with 2.4 GHz Wi-Fi?

A refrigerator
A microwave oven
A ceiling fan

Microwave ovens operate near 2.4 GHz, the same band many Wi-Fi networks use.

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