Top 8 iOS 11 Wi-Fi Issues and Fixes on iPhone X/8/7/6S/6

iOS 11 really brings us a lot of new features, improvements and bug fixes while also causing some new troubles. Is Your iPhone not connecting to Wi-Fi or Wi-Fi randomly dropping out after iOS 11 update? If you are also facing iOS 11 Wi-Fi issue, worry not, here we collect the top 8 iOS 11 Wi-Fi issues on iPhone X/8/7/6S/6 and how to fix them efficiently.

• Part 1: Top 8 iOS 11 Wi-Fi Issues on iPhone X/8/7/6S/6
• Part 2: Top 10 Ways to Fix iOS 11 Wi-Fi Not Working Efficiently?

Part 1: Top 8 iOS 11 Wi-Fi Issues on iPhone X/8/7/6S/6

1. iOS 11 Wi-Fi Keeps Turning On

A lot of users have taken to various forums to complain that their iOS 11 Wi-Fi turns on automatically. Why iOS 11 Wi-Fi turns on by itself on iOS 11.3/11.2/11? It seems to be that you only turn off Wi-Fi from the Control Center, which just disconnects from the current Wi-Fi network. To completely turn off Wi-Fi, you need to go to Settings -> WLAN -> Switch the button off.

2. iPhone/iPad Keeps Dropping Wi-Fi on iOS 11

iPhone/iPad Wi-Fi keeps dropping signals/disconnects randomly after iOS 11.3/11.2/11 update? In most times, iOS update will go through smoothly but sometime it will cause problems. There can be various reasons why your iPhone Wi-Fi is turning off itself automatically. In Part 2, we go over a few ways to fix this issue if your iPhone keeps dropping Wi-Fi on iOS 11.

3. iPhone/iPad Unable to Join Wi-Fi After iOS 11.3/11.2/11 Update

Many iPhone users are facing issue to join WIFI network after upgrading to iOS 11. It's hard to know exactly what cause the problem, the Network or your device is, but for most cases you can resolve the issue by resetting the routers or resetting Network setting your device. For more available solutions, you can go to Part 2.

4. iPhone Not Connect to Wi-Fi After iOS 11.3/11.2/11 Update

Your iPhone won't connect to Wi-Fi after iOS update? Is it able to connect to all other networks except for one, or it cannot to connect all network? Or all other devices are able to connect to this Wi-Fi but your iPhone isn't. If you get the error messages "Not Connected to Wi-Fi", firstly make sure you have turned on the Wi-Fi and enter the Wi-Fi password. If it still has issues to connect Wi-Fi, refer to Part 2 for more help.

5. iPhone Disconnects from Wi-Fi When Locked on iOS 11

"I am using an iPhone 8 on iOS 11.2. My iPhone will disconnect from Wi-Fi when I lock my iPhone for greater than 10 seconds. I will wake my iPhone and will see the WiFi signal cut out and go into cellular (LTE) mode." Some users reveal their iPhone disconnects from Wi-Fi when iPhone goes into sleep mode/is locked. For most cases you can resolve the issue by resetting Network setting your device.

6. Slow Wi-Fi Problem On iOS 11

A lot of iPhone and iPad users complained about poor Wi-Fi performance issues after updating to iOS 11. If you are having this issues, firstly test your network speed on your wired PC to make sure if it is the network problem. If the network speed is ok but iPhone is still slow on Wi-Fi, try to turn off and on Wi-Fi assist, reset Network setting or change iOS Default DNS to Google DNS.

7. iPhone/iPad Wi-Fi Greyed out After iOS 11.3/11.2/11 Update

Wi-Fi button is grayed out and you can't turn it back on after iOS 11.3/11.2/11 update? If the problem is caused by the bugs of the iOS version, system issues on your device, try to reset Network setting or update iOS to the latest version. If the issue is due to the hardware problem with the Wi-Fi antenna on your iPhone, you have to replace your entire iPhone since Apple won't repair just a Wi-Fi antenna on an iPhone.

8. iOS 11 Wi-Fi Keeps Saying "Incorrect Password"

Some users have reported a problem, after updating to iOS 11, when they connect to Wi-Fi, it constantly states, "Incorrect Wi-Fi Password" even though they 100% certainty sure that it is correct. If you have the same issue, firstly try to reset Network setting, forget Wi-Fi network or change iOS Default DNS to Google DNS. If nothing works, refer to Part 2 for more help.

Part 2: Top 10 Ways to Fix iOS 11 Wi-Fi Not Working Efficiently?

If you have iOS 11 Wi-Fi issues like Wi-Fi keeps turning on/off, iPhone won't connect to Wi-Fi, Wi-Fi dropping on iPhone X/8/7/6S/6, the following solutions can help you solve your problem easily.

Solution 1. Force Restart

Force restart is the simplest way to fix many iOS issues including iOS 11 Wi-Fi not working.

iPhone X/8/8 Plus: Volume Up + Down button + Side Button.

iPhone 7/ 7 Plus: Sleep/Wake Button + Volume Down button.

iPhone 6S and Earlier: Sleep/Wake button + Home button until you see the apple logo on the screen.

Solution 2. Reboot Modem and Router

Sometimes the Wi-Fi issues isn't due to your iOS Device but the problem of your modem/router. If your Wi-Fi speed is getting slower, keeps dropping or iPhone constantly asks for correct password, restart your modem/router, and try to connect again. And if it is possible, update your router's firmware to the latest version.

Solution 3. Forget and then Rejoin Wi-Fi Network

If your iPhone won't connect to Wi-Fi after iOS update or constantly asks for correct password, you can forget the Wi-Fi network, and join the network again in following steps:

Go to Settings > WiFi > Tap on the blue "i" next to the name of your network >Tap Forget This Network > Rejoin the network by entering the password.

Solution 4. Turn Off Wi-Fi Assist

Wi-Fi Assist automatically help you switch to cellular when you have a poor Wi-Fi connection. If your iPhone/iPad Wi-Fi keeps dropping , you can also attempt to fix this problem by turn off Wi-Fi Assist .

Go to Settings > Cellular and scroll all the way down > Toggle Wi-Fi Assist OFF.

Solution 5. Reset Network Settings

Resetting these settings is able to flush caches and clear DHCP settings and other networking related info. You can also attempt to fix iOS 11 Wi-Fi not working by resetting the Network Settings. Go to Settings > General > Reset > Reset Network Settings.

Solution 6. Disable Any VPN Apps on Your iDevice

If you have any VPN app enabled on your iPhone, iPad, try to disable it to see if the Wi-Fi issues solved since sometimes unstable VPN service will also affect the Wi-Fi network on your iDevice.

Solution 7. Disable Wi-Fi Networking Services

Wi-Fi is very slow on your iPhone or iPad? You have to take a long time to load a webpage, download an App, or watching videos via Wi-Fi on your iDevice? You can fix this problem by disabling Wi-Fi Networking. By some reports, disabling Wi-Fi Networking on iOS devices restored faster Wi-Fi speeds.

Go to Settings > Privacy > Location Services > System Services > Turn off Wi-Fi Networking.

Solution 8. Change iOS Default DNS to Google DNS or OpenDNS

Sometimes the Wi-Fi problems especially the weak signals, low speed or Wi-Fi dropping could be due to problematic DNS servers from your ISPs. In such cases, you could switch to Google DNS or OpenDNS to resolve the problem.

• Go to Settings > Wi-Fi > Tap on the blue "i" next to the name of your network >Tap DNS.
• Take note of the current DNS numbers then delete them.
• Enter "8.8.8.8, 8.8.4.4" for Google's DNS or "208.67.222.222, 208.67.220.220" for Open DNS.

Solution 9. Disconnect Unnecessary Devices

If there are too many device connected on the same Wi-Fi network, it will affect your Wi-Fi connection as well for most average home routers just work well for 8 wireless devices. Check how many devices have connected to the same Wi-Fi network and disconnect the devices you don't use currently to speed up the Wi-Fi on your iPhone/iPad.

Solution 10. Fix iOS 11 Wi-Fi Not Working on iPhone or iPad with Tenorshare ReiBoot

After trying all the solutions listed above but the Wi-Fi still not working on your iPhone, iPad? The last resort is to repair the corrupted operating system which may lead the Wi-Fi problems with a professional iOS restore tool – Tenorshare ReiBoot. It can help you fix various iOS problems such as Wi-Fi not working, iOS stuck.

• Run ReiBoot after installing and connect your device to that computer with an USB cable.
• After Tenorshare ReiBoot detect your device, Click "Repair Now" to start downloading the firmware package.


Once the firmware package is downloaded completed and successfully. Click "Start Repair" to start system recovery. After the repairing process, check if the Wi-Fi problems is solved on your device.

That's all about the top 8 iOS 11 Wi-Fi issues on iPhone X/8/7/6S/6 and how to fix iOS 11 Wi-Fi not working efficiently. Let us know in the comments if you have any other Wi-Fi issues after upgrading to iOS 11.3/11.2/11.

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