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Fix Wi-Fi that drops or is slow

We'll confirm one device vs all devices, check placement and interference, power-cycle and isolate wired vs Wi‑Fi, then get you to the exact fix or escalation with evidence.

Troubleshooting · Wi‑Fi & networking
5–15 min
What you'll need
  • Access to the modem and router (to power-cycle and check lights)
  • At least one device that can connect via Wi‑Fi (a second device helps for the one-vs-all test)
  • Device with Ethernet (optional). No Ethernet? You can still do most steps and escalate.
Step 1 of 9

Quick triage — pick your path

Quick triage — pick your path

Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: First, is it just one device or everything? One device points to that device’s settings or driver; all devices point to router, placement, or ISP.

  • On another phone, laptop, or tablet that uses the same Wi‑Fi, open a website or run a speed test at fast.com. Compare: does the problem happen on that device too?
  • Good: Only one device is slow or dropping—focus on that device (forget network, reconnect, update drivers).
  • Bad: Every device has the same problem—focus on router placement, power-cycle, channel, or modem/ISP.

Check signal and placement

Goal: Verify distance, obstacles, and interference. Weak signal or interference (e.g. microwave, many nearby networks) can cause drops or slowness.

  • Move the affected device to within 2–3 meters of the router, with clear line of sight (no thick walls or metal between). Retest.
  • If the problem happens mainly in one room or when the microwave runs, that points to placement or interference.
  • Good: Moving closer or away from the microwave fixes it—placement or interference is the cause; keep the device closer or move the router.
  • Bad: Same problem even when right next to the router—proceed to power-cycle and wired test.

Power-cycle and isolate

Goal: Clear stuck state and determine if the issue is Wi‑Fi-only or the whole path (modem/ISP).

  • Unplug the modem and router from power. (If you have a single combined box, unplug it.) Wait 60 seconds. Plug in the modem first, wait 30 seconds, then plug in the router. (Combined unit: just plug it back in.)
  • Connect one device with an Ethernet cable to a LAN port on the router (the yellow ports on the back). Open fast.com in a browser. If the page loads and shows speeds, wired works—the issue is Wi‑Fi or router. If fast.com doesn’t load or is very slow, wired is bad—likely modem or ISP.
  • Wired OK: The page loads—the issue is Wi‑Fi or router settings. Try a different channel and firmware update (see Router settings).
  • Wired bad: Even wired, no internet or very slow—likely modem or ISP. Check the modem’s internet/WAN light; if it’s off or blinking, contact your ISP.
  • No Ethernet? Do the one-device-vs-all test, placement check, and power-cycle above. Try router settings if you can log in. If the problem continues, skip to Escalate and capture what you can.

Router settings (channel, firmware)

Goal: If the problem is Wi‑Fi-only (wired to router is OK), try a less crowded channel and check that the router firmware is up to date.

  • Log into the router at http://192.168.1.1 or http://192.168.0.1 (check the router label or manual if the address or password differs). Go to Wireless or Wi‑Fi settings.
  • If the router shows a channel map or list of nearby networks, pick a channel with fewer neighbors. If not, try 1, 6, or 11 for 2.4 GHz; 36, 40, 44, or 48 for 5 GHz. Save. The router status should show the new channel.
  • Open Firmware or Administration and check for updates. Apply if available; the router will reboot.
  • Good: After the channel change or update, Wi‑Fi is stable and speed improves. Bad: No change—capture signal strength (bars or RSSI from the device), one speed test result, and what you already tried; escalate with that evidence.

Escalate

Goal: When basic steps are done but the problem continues, hand off with evidence.

Capture: which device(s) are affected, when it happens (always, one room, when microwave on), signal strength (bars or RSSI from Wi‑Fi settings), one speed test result from fast.com (download Mbps, upload Mbps, latency ms), and what you already tried (power-cycle, forget/reconnect, channel, firmware). Share with your ISP or a technician.

While you wait for support: Consider securing your accounts with two-factor authentication.

Verification

  • One device: That device reconnects and stays connected; speed test at fast.com shows expected throughput; no drops for 10+ minutes of normal use.
  • All devices: Wi‑Fi is stable across devices; speed test shows expected Mbps; latency under 100 ms.
  • Escalation: You have captured which devices, when it happens, signal strength (bars or RSSI), one speed test result, and what you already tried.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. One device vs all Test another device on the same Wi‑Fi; one device affected points to device-side fix, all devices to router or ISP.
  2. Placement and interference Move device or router; reduce distance and obstacles; note if drops correlate with microwave or location.
  3. Power-cycle and wired test Power-cycle modem and router; test one device wired to router to see if Wi‑Fi-only or whole path.
  4. Device or router fixes One device: forget network, reconnect, update drivers. All devices: change channel, update firmware.
  5. Escalate with evidence Capture which devices, when it happens, signal strength, speed test result, and what you already tried.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Which device(s) are affected (one vs all)
  • When the problem happens (always, only in one room, when microwave on)
  • Signal strength (bars or RSSI) on affected device(s)
  • One speed test result (Wi‑Fi) and, if possible, wired to router
  • Steps already tried (power-cycle, forget/reconnect, channel, firmware)

Is only one device affected or all devices on Wi‑Fi?

If only one device is slow or dropping, the fix is usually on that device. If all devices are affected, focus on router, placement, or ISP.

Check whether the problem happens on one phone/laptop only or on every device connected to the same Wi‑Fi. Good: you know one vs all. Bad: unclear—test with another device if possible.

One device All devices

You can change your answer later.

Fix the one affected device

One device usually means that device's Wi‑Fi driver, settings, or cache.

On the affected device: forget the Wi‑Fi network and reconnect (re-enter password). Restart the device. Check for OS and Wi‑Fi driver updates. Good: reconnecting or update fixes it. Bad: still slow or dropping—try moving the device closer to the router and retest.

Done

Did moving the device closer (or away from the microwave) help?

Distance, walls, and metal weaken signal; microwave can cause drops.

Move one device closer to the router and retest. Note if the problem happens in one room or when the microwave runs. Good: moving closer or away from interference helps. Bad: same problem even close to the router—proceed to power-cycle and wired test.

Yes No

You can change your answer later.

Improve placement or add extender

Keep the device closer to the router or move the router to a more central location. If you must be far away, consider a Wi‑Fi extender. If drops happen when the microwave runs, move the device away from it or switch to 5 GHz in router settings if your device supports it.

Done

Do you have a device with Ethernet to test wired?

Power-cycle modem and router first (clears stuck state). If you have Ethernet, a wired test shows if the problem is Wi‑Fi-only or the whole path (modem/ISP). No Ethernet? Power-cycle, then try router settings or escalate.

Power off modem and router (or the single box if combined), wait 60 seconds, power on. Do you have a device with Ethernet? If yes, connect it to a LAN port and open fast.com—the next step will ask if it works. If no, skip to router settings (channel, firmware) or escalate with what you can capture.

Yes No

You can change your answer later.

Is wired to the router working?

Testing one device wired shows if the problem is Wi‑Fi-only or the whole path (modem/ISP).

Connect one device with an Ethernet cable to a LAN port on the router. Open fast.com in a browser. Wired OK: page loads—issue is Wi‑Fi or router; try channel, firmware. Wired bad: page doesn't load—likely modem or ISP; check lights, contact ISP.

Yes No

You can change your answer later.

No Ethernet; power-cycle, then try router settings or escalate

You do not have a device with Ethernet to test wired. Power-cycle the modem and router first (clears stuck state). Then try router settings (channel, firmware) if you can log in. If the problem continues, capture what you can—which devices, when it happens, signal strength (bars or RSSI), one speed test from fast.com on Wi‑Fi, and what you tried—and contact your ISP.

Done

Wi‑Fi-only issue; try channel or firmware

Power-cycle first if you have not yet. Then try Wi‑Fi or router settings. In the router admin (e.g. 192.168.1.1), try a different Wi‑Fi channel (less crowded). Check for firmware updates. Then retest Wi‑Fi at fast.com.

Done

Modem or ISP issue

Even wired to the router, the connection is bad—likely modem or ISP. Check modem lights (WAN/Internet). Contact your ISP with the facts: which lights are on, speed test result if possible, and that wired to the router also fails.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why does my Wi-Fi keep disconnecting?
Common causes are placement (distance, walls, interference), a congested Wi-Fi channel, outdated router firmware, or a device-specific issue. Power-cycle the modem and router, test with one device wired to isolate the problem, and check if only one device or all devices are affected.
How do I know if it's my router or my internet?
Connect one device with an Ethernet cable to the router, then open fast.com in a browser. If the page loads, wired works—the issue is Wi‑Fi or the router. If it doesn't load, the problem is likely the modem or your ISP. No Ethernet? Do the other steps and escalate with what you can capture.
Should I change my Wi-Fi channel?
Yes, if many nearby networks use the same channel. Log into your router's admin page (often 192.168.1.1 or 192.168.0.1) and switch to a less congested channel—1, 6, or 11 for 2.4 GHz; 36, 40, 44, or 48 for 5 GHz. Retest after changing.
I don't have a device with Ethernet. What can I do?
You can still do the one-device-vs-all test, placement check, and power-cycle. Try router settings if you can log in. If the problem continues, capture what you can—which devices, when it happens, signal strength (bars), a speed test from fast.com on Wi‑Fi, and what you tried—and contact your ISP. They can help from their side.
I can't log into my router. What do I do?
Check the sticker on the router for the login address (often 192.168.1.1 or 192.168.0.1) and default password. If your ISP set it up, contact them—they may have changed it. You can still do the one-device-vs-all test, placement check, and power-cycle without router access.

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