Fix slow home or office Wi‑Fi without calling your provider

The other day a customer walked in complaining that his laptop kept buffering on Netflix even though the router lights were solid. We know a sluggish Wi‑Fi can ruin a work call or a family movie night, so let’s get it sorted without ringing the ISP. Why is my Wi‑Fi slow even though I pay for fast broadband? Answer: The speed you pay for arrives at the wall socket, but the wireless link between the router and your device can be much slower. The two key culprits are bandwidth – the amount of data the router can push through – and interference – anything that jams the radio signal. How can I tell if the router is the problem? First, connect a laptop directly to the router with an Ethernet cable. Run a speed test on speedtest.net . If the result matches your broadband plan, the WAN side is fine; the bottleneck is the Wi‑Fi. What basic router settings can I tweak? Restart – power‑cycle the unit for 30 seconds; this clears stale tables. Channel – switch from the default auto‑select to a fixed 2.4 GHz channel (1, 6 or 11) or a clear 5 GHz channel. Use a phone app like Wi‑Fi Analyzer to spot the least‑used channel. Band – if you have a dual‑band router, keep high‑bandwidth devices on 5 GHz and reserve 2.4 GHz for older gear. Transmit power – some routers let you boost the power setting; raise it a notch if the signal is weak in the far corner. Can I improve Wi‑Fi without buying a new router? Yes. Re‑position the router: place it on a shelf, away from thick walls, metal cabinets, micr