What actually slows your internet down
Internet speed depends on three separate things: your connection from the wall, what your devices are doing with that connection, and interference between your router and those devices. Most people assume the problem is their service plan, but the plan is usually fine — something else is eating the bandwidth or blocking the signal.
Before you call your internet provider or buy new equipment, you can test which of these three is the real problem. This takes about ten minutes and tells you exactly what to fix.
Key Takeaways
- Run a speed test on a device sitting next to your router to see if your service plan itself is the problem, or if something else is slowing you down.
- Close background apps and browser tabs on the device you are using — they consume bandwidth even when you are not looking at them.
- Move your router to a central, elevated location away from walls, metal objects, and other electronics that block the signal.
- Restart your modem and router by unplugging them for 30 seconds, which clears out temporary problems that slow speeds down.
- If speed tests show you are getting what you pay for, the slowness is on your end and a new plan will not fix it.
Run a speed test to find the real problem
Go to speedtest.net on a laptop or phone sitting within three feet of your router. Run the test. Write down the download speed number you see.
Now compare that number to your service plan. Your bill or your provider's website tells you what speed you are paying for. If your test shows roughly that speed (within 10 percent), your service plan is working. If the test shows much less, something between the wall and your device is the problem.
This matters because it tells you whether to fix your setup or call your provider. If the test shows you are getting what you pay for, buying a faster plan will not help — you need to fix what is slowing things down on your end.
Close apps and browser tabs eating your bandwidth
Every app on your phone or computer can use the internet in the background, even when you are not using it. Email, cloud storage, messaging apps, and video streaming apps all do this. If you have ten apps running and five browser tabs open, they are all competing for the same connection.
On Windows, press Ctrl+Shift+Esc to open Task Manager. Click the Network column header to sort by network use. Close any app using more than a few percent. On Mac, open Activity Monitor from Applications > Utilities, click the Network tab, and close apps at the top of the list.
On your phone, go to Settings > Apps (or Battery > Battery Usage on iPhone) and look for apps using data in the background. Turn off background data for anything you do not need running constantly. Messaging apps, social media, and cloud backup are common culprits.
Close unnecessary browser tabs. Each tab can load ads, videos, and tracking scripts that use bandwidth. If you have 20 tabs open, close the ones you are not actively reading.
Restart your modem and router
Modems and routers are small computers that can get stuck in a slow state after running for days or weeks. Restarting them clears out temporary problems that nothing else will fix.
Unplug your modem (the device that connects to the wall outlet and the cable coming from outside). Wait 30 seconds. Plug it back in and wait two minutes for the lights to stop blinking. Then unplug your router, wait 30 seconds, and plug it back in. Wait another two minutes.
Run your speed test again. Many people see a noticeable improvement after this step alone.
Move your router to a better location
Routers send a wireless signal in all directions, but walls, metal, and other electronics block that signal. If your router is in a closet, behind a TV, or in a corner, the signal has to travel through obstacles to reach you.
Move your router to a central location in your home, elevated off the ground (a shelf or wall mount works). Keep it away from microwaves, cordless phones, baby monitors, and metal filing cabinets — these all interfere with the wireless signal. Keep it away from walls and closed doors.
If you have a two-story home, put the router on the first floor roughly in the middle. If you spend most of your time in one room, put the router in that room or the room directly below or above it.
After moving the router, run your speed test again from the location where you normally use the internet. You should see an improvement if the signal was the problem.
Check for interference on your wireless channel
Routers broadcast on one of several wireless channels. If your neighbors' routers are also broadcasting on the same channel, they interfere with each other and slow everything down. You can switch to a less crowded channel.
Download a free app called WiFi Analyzer (on Android) or use the built-in tools on Mac (System Preferences > Network > WiFi > Advanced). The app shows you which channels your neighbors are using and which ones are empty.
Log into your router's settings by typing 192.168.1.1 into a browser address bar (or 192.168.0.1 if that does not work). Look for wireless settings or channel settings. Change to a channel that the app showed as empty. Save and restart the router.
This step matters most if you live in an apartment building or a dense neighborhood. In a house surrounded by empty land, interference is usually not the problem.
When to contact your provider or upgrade equipment
If your speed test shows you are getting less than 80 percent of what you pay for, even after restarting the router and closing background apps, contact your provider. They can check the line from the street to your house and tell you if the problem is on their end.
If the speed test shows you are getting what you pay for but it still feels slow, the problem is that your plan is not fast enough for what you are doing. Streaming video in 4K, video calls with multiple people, and large file uploads all need more speed than basic web browsing. In that case, a faster plan will help.
If you have tried everything here and the signal is still weak in distant rooms, your router may be too old or too weak for your home size. Routers last about five years before they slow down. If yours is older than that, replacing it may help.
Frequently Asked Questions
Why is my internet fast on one device but slow on another?
The device that is slow may have background apps running, or it may be farther from the router and getting a weaker signal. Run a speed test on both devices in the same location. If both show the same speed, the slow device has a software problem. If one shows much less speed, that device is farther from the router or has interference between it and the router.
Does restarting the router really help or is that just a myth?
Restarting actually fixes real problems. Routers can develop memory leaks and get stuck processing old data after running for weeks. A restart clears this out. It does not fix everything, but it fixes enough problems often enough that it is always worth trying first.
What is the difference between my modem and my router?
The modem connects to your internet provider's line and converts that signal into data your devices can use. The router takes that data and broadcasts it wirelessly to your devices. Some providers give you a combined modem-router unit. If you have two separate boxes, restart both.
Will a mesh router system make my internet faster?
A mesh system spreads the signal across your whole home, so it reaches farther and more evenly. It will not make your internet faster if the problem is your service plan or your modem. It will make the signal stronger in distant rooms if that is where you are experiencing slowness.
How often should I restart my router?
You do not need to restart it on a schedule. Restart it when you notice slowness, or once every few months as preventive maintenance. If you restart it and the problem comes back within days, something is wrong with the router itself and you may need to replace it.