How to Fix Slow Wi-Fi in 10 Minutes

Slow Wi-Fi feels like one problem, but it has several possible causes. Work through these steps in order. Most people find the fix by step five.

Step 1: Check whether Wi-Fi is really the problem (2 minutes)

Plug a laptop into the router with an Ethernet cable and run a speed test. Then run the same test over Wi-Fi in the room where it is slow.

• Wired is slow too: the problem is your internet plan, modem, or provider. Restart the modem and router, then contact your provider.
• Wired is fast, Wi-Fi is slow: carry on, because this is a Wi-Fi problem.

Step 2: Restart the router (1 minute)

Unplug it for 30 seconds and plug it back in. It clears memory issues and forces a fresh channel choice.

Step 3: Check which band you are on (1 minute)

• Close to the router, you want 5 GHz or 6 GHz for speed.
• Far from the router, 2.4 GHz may give a steadier connection.

If your device sits on 2.4 GHz near the router, switch to the 5 GHz network name, or forget the network and rejoin. See 2.4 GHz vs 5 GHz vs 6 GHz: Which Band Should You Use at Home?.

Step 4: Move closer or move the router (2 minutes)

• Place the router in the middle of the home, up on a shelf, in the open.
• Keep it away from microwaves, cordless phone bases, thick walls, metal cabinets, and fish tanks.
• Point external antennas so that one is vertical and one is angled if you have two or more.

Every wall and floor reduces the signal, and higher bands lose more.

Step 5: Change the channel (2 minutes)

In a crowded building, your neighbours' networks may sit on the same channel as yours.

• On 2.4 GHz, choose channel 1, 6, or 11 only.
• On 5 GHz, try a channel away from the busiest. Non-DFS channels are the most stable choice. See 5 GHz DFS Channels for why.
• A free Wi-Fi analyser app on your phone or laptop shows which channels are crowded.

Step 6: Update firmware and drivers (2 minutes)

Update the router firmware from its admin page or app, and update the Wi-Fi driver on laptops. Old drivers can limit speed or cause drops.

Step 7: Look for device limits

Older devices may only support 2.4 GHz or older Wi-Fi standards, and slow the router's time for everyone else. Upgrade or retire the oldest devices if they are the problem.

Step 8: Consider the bigger fix

If one router cannot cover the home, a mesh system or an extra access point connected by Ethernet cable makes the biggest difference. Wi-Fi extenders that repeat over the air usually halve the speed of the link they extend, so wired backhaul is better where possible.

Quick checklist

• Wired speed test done
• Router restarted
• On the right band
• Router in a central, open spot
• Channel changed if crowded
• Firmware updated
• Oldest devices identified

Next Steps

If ten minutes of troubleshooting does not solve it, the problem is usually placement, density, or the wired side — all things a proper survey finds quickly. Our Networks & Infrastructure engineers diagnose slow Wi-Fi across Kampala offices and homes.

Request a Free Site Survey to get to the root of persistent slow Wi-Fi.