“The Wi-Fi is slow” is a symptom with four very different diseases — a slow internet plan, a badly placed router, wireless congestion, or aging hardware. People routinely buy a new router to fix a problem that was actually their plan, or upgrade their plan to fix what was actually router placement. Five minutes of diagnosis first saves both mistakes.
Step 1: Find out which problem you have
Run a speed test (fast.com or speedtest.net) twice: once on a device wired or standing next to the router, once from the spot where Wi-Fi disappoints you. Compare both against the speed your plan promises.
Near-router speed far below your plan → the problem is upstream: your modem, router, or the provider itself. Near-router speed fine but distant speed terrible → it’s coverage: placement or range. Everything fine except at 7pm → congestion, yours or the neighborhood’s. All speeds fine but pages feel slow → it may not be speed at all (see step 5).
Step 2: The free fixes (do these regardless)
Restart the modem and router — mocked, effective; weeks of uptime accumulate genuine glitches. Relocate the router: central, elevated, in the open. The router in the basement corner cabinet next to the water heater is the single most common cause of dead-zone misery; radio waves are weakened by walls, metal, water (aquariums, fridges) and distance. Even one room’s improvement in placement can transform coverage. Update firmware via the router’s app or admin page — performance and security fixes ride along. Audit the freeloaders: the router’s app lists connected devices; a forgotten 4K camera or a neighbor on an old shared password explains many evening slowdowns. Change the password if the list has strangers.
Step 3: Use your bands correctly
Modern routers broadcast 2.4GHz (long range, slow, crowded) and 5GHz/6GHz (fast, shorter range). Slow-but-connected far-corner devices are usually clinging to a weak 5GHz signal or stuck on 2.4GHz. If your router supports band steering, enable it; otherwise put distant low-need devices (smart plugs, printers) on 2.4GHz and keep laptops, TVs and consoles on 5GHz. Streaming boxes and desks near the router deserve Ethernet — every wire is Wi-Fi airtime returned to everything else.
Step 4: When hardware is genuinely the answer
A router over five years old predates Wi-Fi 6 and modern congestion handling — replacement is justified. A large or multi-floor home that one router can’t cover needs a mesh system (two or three nodes), which beats both “more powerful router” hopes and signal-extender gadgets that halve speeds. And if the wired test in step 1 showed your plan underdelivering: that’s a call to your provider with the test results, not a hardware purchase. (Considering an upgrade anyway? See our Wi-Fi 7 explainer for whether it’s worth it yet.)
Step 5: If speed tests pass but browsing still drags
That’s latency or DNS, not bandwidth. Try switching DNS to a public resolver ( or — both free, often faster than the provider default, easily set in router settings). If video calls stutter while downloads test fine, the issue is bufferbloat — newer routers’ QoS/”smart queue” settings address it. Both fixes cost nothing and resolve a surprising share of “slow internet” complaints that no speed upgrade would touch.
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