How to Fix Huawei Mate 9 WiFi Problems

If your Huawei Mate 9 keeps dropping WiFi, won’t connect, or shows a weak signal, this guide walks you through the most effective fixes—from simple toggles to system-level resets. You’ll learn how to diagnose the cause and apply the right solution, usually without needing any special tools.

What You’ll Need

Your Huawei Mate 9 phone
Access to the WiFi router (or the person who manages it)
A pen or paper to note down settings (optional)

Step-by-Step

Toggle WiFi Off and On
Go to Settings > WiFi and switch the toggle off. Wait 10 seconds, then turn it back on. This clears minor software glitches that often cause connection issues.
Restart Your Phone
Press and hold the power button, then tap Restart. A fresh boot clears temporary system errors that can affect WiFi hardware detection.
Forget and Re-add the Network
In Settings > WiFi, tap the network name you’re having trouble with, select Forget, then tap the network again and re-enter the password. This resets any corrupted saved credentials.
Check Router Settings
Restart your router by unplugging it for 30 seconds and plugging it back in. Also verify that the router isn’t set to a channel that your phone doesn’t support—most routers default to auto, but if you’ve changed it, switch to 1, 6, or 11 for 2.4GHz.
Disable WiFi Power Saving Mode
Go to Settings > Battery > More battery settings. Turn off Smart power saving or any option that says “Close WiFi when idle.” This prevents the phone from cutting WiFi to save battery.
Reset Network Settings
Go to Settings > System > Reset > Reset network settings. This clears all saved WiFi networks, Bluetooth pairings, and mobile data settings, but won’t delete your personal files. You’ll need to re-enter WiFi passwords afterward.
Update System Software
Go to Settings > System > Software update and check for updates. Huawei regularly releases fixes for WiFi connectivity issues. Install any available update.
Check for Interference
Move closer to the router and see if the signal improves. If you’re in a crowded area, try switching between 2.4GHz and 5GHz bands. The Mate 9 supports both—check your router’s manual to see how to enable separate bands.
Use Safe Mode
Press and hold the power button, then tap and hold Power off until the Safe mode prompt appears. In safe mode, third-party apps are disabled. If WiFi works fine, an app is causing the issue. Uninstall recently downloaded apps.
Factory Reset (Last Resort)
Back up your data first. Go to Settings > System > Reset > Factory data reset. This restores the phone to its original state and can fix deep software corruption affecting WiFi.

Common Mistakes

Skipping the router restart: Many WiFi issues are on the router side. Always restart it before assuming your phone is broken.
Not checking the WiFi password: A simple typo in the password is a frequent cause. Use the “show password” option to verify.
Ignoring the 5GHz band: The Mate 9’s 5GHz antenna can be weaker than 2.4GHz. If you’re far from the router, 5GHz may drop often.
Using a case that blocks the antenna: Thick or metal cases can interfere with WiFi signals. Remove the case and test.
Assuming a hardware fault too soon: Software glitches are far more common. Try all software fixes before considering hardware repair.

Tips

Keep your phone updated: Huawei’s EMUI updates often include WiFi improvements.
Use a static IP: If your phone connects but has no internet, go to the network’s settings and set a static IP address (e.g., 192.168.1.100) with the router’s gateway as the DNS.
Change the router’s channel: If you live in an apartment, interference from neighbors is common. Set the router to a less crowded channel.
Turn off WiFi scanning: Go to Settings > Security > Location > Scanning and disable WiFi scanning. This can reduce battery drain and connection drops.

Troubleshooting

If the steps above didn’t fix the problem, try these additional checks:

Test with another device: If other devices also have WiFi issues, the problem is your router or internet service. Contact your ISP.
Check if only certain apps fail: If WiFi works but apps like YouTube buffer, the issue might be app-specific. Clear the app’s cache in Settings > Apps.
Try a different WiFi network: Connect to a public hotspot or a friend’s router. If it works, your home router is the problem.
Check the date and time: Incorrect date/time can break HTTPS connections. Go to Settings > System > Date & time and enable automatic.
Hardware inspection: If none of the software fixes work, the WiFi antenna or chip may be damaged. Contact Huawei support or a certified repair center.

Frequently Asked Questions

Why does my Mate 9 keep disconnecting from WiFi?
This is often caused by WiFi power saving mode or a weak signal. Disable power saving for WiFi and try moving closer to the router.

Can I fix WiFi issues without resetting my phone?
Yes, try restarting your router, forgetting the network, and updating the system first. Reset network settings is less invasive than a full factory reset.

Will a factory reset delete my photos?
Yes, a factory reset erases all data on the phone. Back up photos, contacts, and files to Huawei Cloud or a computer before doing it.

Why does WiFi work on other devices but not on my Mate 9?
This points to a phone-specific issue. Try forgetting the network, resetting network settings, or checking if your phone’s software is up to date.

Is there a way to boost WiFi signal on the Mate 9?
You can’t increase the antenna’s power, but you can improve reception by removing the case, avoiding metal objects, and using a WiFi repeater or mesh system.

How do I know if it’s a hardware problem?
If WiFi fails after a factory reset and on every network, it’s likely hardware. Contact Huawei support for diagnosis.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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