How to Fix Slow Internet

About How to Fix Slow Internet

Slow internet usually comes down to a handful of fixable causes. Work through this checklist — most people speed things up in a few minutes — and run a speed test before and after to confirm the improvement.

Common causes of slow internet

Before changing anything, it helps to know what typically slows a connection down:

• Weak WiFi signal or being too far from the router.
• Too many devices using the network at once.
• Background downloads, updates, or cloud backups.
• Old router or modem, or outdated firmware.
• Network congestion during peak evening hours.
• A VPN, or your ISP throttling certain traffic.

Quick fixes to speed up your connection

Try these in order and re-test after each one:

• Restart your router and modem — unplug for 30 seconds, then power back on.
• Move closer to the router or reduce walls between you and it.
• Switch to the 5 GHz WiFi band for faster speeds at shorter range.
• Disconnect devices you are not using to free up bandwidth.
• Pause downloads, streaming, and updates on other devices.
• Update your router firmware to the latest version.
• Use a wired Ethernet connection for stationary devices like TVs and desktops.

Improve your WiFi signal

Router placement makes a big difference. Put the router in a central, open, elevated spot — not in a cabinet, on the floor, or behind a TV. Keep it away from microwaves, cordless phones, and thick walls. For larger homes, a mesh WiFi system or an extender removes dead zones better than a single router.

When to contact your ISP

If your speed test results are consistently below about 80% of your plan’s advertised speed across multiple tests at different times — especially on a wired connection — the problem may be on your provider’s side. Document your results with dates and times before you call, and ask them to check the line and your equipment.

Test before and after

The only way to know a fix worked is to measure it. Run a free speed test before you start, apply the fixes above, then test again on the same device and connection. Compare download, upload, and ping to see what improved.

How to use

  1. Open the How to Fix Slow Internet & WiFi guide on SpeedTesters.
  2. Read the recommendations for your use case (gaming, streaming, mobile, or home WiFi).
  3. Run a free speed test on the homepage and compare download, upload, ping, and jitter.

Limits & notes

Privacy

Frequently asked questions

Why is my internet so slow all of a sudden?

Sudden slowdowns are often caused by a background download or update, too many devices online, WiFi interference, or peak-hour congestion. Restart your router, pause other downloads, and run a speed test to pinpoint it.

How can I make my WiFi faster?

Move the router to a central, elevated spot, switch to the 5 GHz band, update firmware, reduce connected devices, and consider a mesh system for large homes. Use Ethernet for stationary devices.

Why is my WiFi slow on my phone but not other devices?

This usually points to weak signal where you are standing, an overloaded 2.4 GHz band, or too many apps refreshing in the background. Move closer to the router, switch to 5 GHz, and close background apps.

Does restarting the router actually help?

Yes, often. Restarting clears the router’s memory, reconnects to your ISP, and can resolve temporary congestion or glitches that slow your connection.

How do I know if my ISP is the problem?

Run several speed tests on a wired connection at different times. If you consistently get well under your plan’s advertised speed, the issue is likely with your ISP — contact them with your documented results.