How to compare connection stability across devices

Your laptop freezes during calls, but your phone seems fine on the same Wi-Fi. Or every device pauses at once, and you are not sure whether the router, internet service, or one device is responsible. A fair comparison can help narrow down the cause.

Use the Connection Stability test on each device. It measures response time, jitter, lost requests, and dropouts over a few minutes. The results show how the connection behaves during the test, but they do not identify a faulty component by themselves.

Compare the devices fairly

1. Open the Connection Stability test on the first device. Connect it to the network you want to check, such as your home Wi-Fi.
2. Put the device in the same place you will use for the other tests. Keep it the same distance from the router, and avoid moving it while the test runs.
3. Pause large downloads, cloud backups, game updates, and video streams on all devices. Keep VPN use consistent: either turn it off on each device or test with it on for each one.
4. Let the test run to completion. Note the response time, jitter, lost requests, and any dropouts. Do not run the test on several devices at the same time, because their traffic can affect one another.
5. Repeat the test on the next device under the same conditions. For a useful comparison, run a second round in reverse order. This helps reveal whether the network simply became busier or quieter between tests.

If you are comparing Wi-Fi, keep each device on the same network name and test from the same spot. A device may connect to a different Wi-Fi band or access point automatically, so the comparison is not always a test of identical radio conditions. For a wired-versus-wireless comparison, label the connection type in your notes rather than treating the results as a device-only difference.

What the results mean

One device has repeated drops

If the same device shows lost requests or dropouts in both rounds while the others remain steady, focus on that device first. Its Wi-Fi adapter, network settings, VPN, driver, or browser may be involved. Repeat the test after reconnecting it to Wi-Fi and closing other network apps.

All devices show drops around the same time

That pattern points away from a fault isolated to one device. The router, modem, access point, internet service, or a shared network condition may be affecting everyone. Compare again later, and check whether other people in the home noticed the same pause.

One device has higher jitter but no lost requests

Jitter is the amount that response time varies from one request to another. A higher result means timing is less consistent, even if the connection did not fully drop during the test. That can matter for calls and games, which are sensitive to brief delays. Repeat the test before treating a small difference as a fault.

Results change from round to round

Network conditions can change as devices join, apps sync, or other people use the connection. A single run is only a short sample. Compare devices in pairs, keep background traffic quiet, and run another round at a different time if the problem comes and goes.

Every device looks steady, but one app still fails

The test did not observe a connection problem during its run. That does not prove that every website or app will work: an app can have its own server, browser requirement, or sign-in problem. Test the affected app again while the issue is happening, and compare it in another browser if possible.

Fix the connection problem

1. Reconnect the device to Wi-Fi. Turn Wi-Fi off and back on, then reconnect to the intended network. On an iPhone, check Settings › Wi-Fi. On many Android devices, use Settings › Network & internet › Internet; menu names can vary by manufacturer.
2. Check for a VPN or proxy difference. Temporarily disconnect a VPN on the affected device, then repeat the test. If the results improve, compare the VPN settings and server choice across devices. A VPN can change the route your traffic takes.
3. Restart the affected device. This can clear a temporary network or browser problem. After it restarts, connect to Wi-Fi and run the test again before reopening downloads or sync apps.
4. Check the saved network settings. On Windows 11, open Settings › Network & internet › Wi-Fi and confirm the device is connected to the expected network. On macOS, open System Settings › Network › Wi-Fi. If the device is on the wrong network, select the correct one and test again.
5. Update the device and its network software. Install available operating system updates. On Windows 11, check Settings › Windows Update. On macOS, check System Settings › General › Software Update. If only one computer remains unreliable, check the computer maker's support instructions for its wireless adapter driver.
6. Restart the router if several devices are affected. Use its normal restart option or unplug its power for about 30 seconds, then let it reconnect fully. Avoid a factory reset unless you have the setup details needed to configure the network again.

Tell a Wi-Fi problem from an internet problem

If all devices have trouble only in one part of the home, distance, walls, or interference may be weakening the wireless connection there. Test the same devices closer to the router. If they improve together, investigate Wi-Fi coverage or router placement rather than changing each device.

If all devices show similar drops even close to the router, the issue may be beyond Wi-Fi, such as the router's connection to the modem or the internet service itself. A browser test cannot read Wi-Fi signal strength in dBm, the radio measurement used by some network tools. It shows how the connection performs for the test instead.

Keep a short note of each device, its connection type, location, test time, and results. That makes it easier to spot a repeatable difference and gives your internet provider or device support team useful evidence.