By Achilles Hill | Last Updated
Q: "After updating my iPhone 15 to iOS 17, it won't connect to WiFi, which is a big hassle for me. Is anyone else experiencing the same iOS 17 WiFi issue on their iPhone 15? How do I fix it?"
Is your Wi-Fi not working on your iPhone after an iOS update? You're not alone! Many users encounter issues like unable to connect, slow speeds, or intermittent disconnections following a system update. Don't worry—this article provides effective solutions to get your Wi-Fi back up and running.
After updating to the latest iOS version, you may experience the following Wi-Fi-related problems: unable to connect to Wi-Fi networks, frequent disconnections, slow internet speeds, Wi-Fi option grayed out in Settings. These issues are mainly caused due to bugs on iOS, they can randomly appear on any iOS system and iOS 17/18 is not an exception. Apart from that, software conflicts, corrupted routers, and malfunctioning or misconfigured devices can cause WiFi issues on iPhone.
The WiFi signal is also one of the influencing factors, users need to keep a certain distance from the WiFi router to be able to connect to the network, the router can't provide a stable connection if the distance is too far. It's simple, but many users ignore it.
Currently, Apple has not officially revealed the reason why the wifi is not working after updating the iPhone to iOS 17/18, despite the lack of specific details, we can still try to solve the problem by the following methods.
After you realize that your iPhone is not connecting to the WiFi network, you should first come to troubleshoot the router and damage issues. You can verify this by connecting other electronic devices to this WiFi and if they are experiencing the same problem, then the root cause of the problem could be the router.
Just like computers, your router can also die due to software errors or too much of its running memory being used up, causing the CPU to run down. In this case, you just need to reboot your router. For hardware damage to your router, you should take it to a repair store.
There could be another very unlucky situation where both your iOS and the original router are faulty. If you're still not sure if the router is causing the iOS WiFi issues, then you can try switching the WiFi on your iPhone and try connecting again, if the WiFi isn't working on the iPhone but working on other devices, then your iOS seems to be faulty as well.
If you are having problems with your iPhone, such as not being able to connect to WiFi, iOS 17 standby mode not working, iPhone randomly restarts, etc., then rebooting the device may be a good way to fix the problem. Here are the steps to reboot different iPhone models.
iPhone X, 11, 12, 13, or later:
Step 1: Press and hold either the volume button and the side button until the power-off slider appears, then drag it to turn off your device.
Step 2: Press and hold the side button until you see the Apple logo to turn on the device.
iPhone 6, 7, 8, or SE (2nd or 3rd generation):
Step 1: Press and hold the side button and when the shutdown slider appears, drag it to turn off the device.
Step 2: Turn the device back on by pressing and holding the side button until the Apple logo appears.
iPhone SE (1st generation), 5, or earlier:
Step 1: Press and hold the top button until the Shutdown slider appears, and drag it to shut down the iPhone.
Step 2: To turn the device on, press and hold the top button until the Apple logo appears.
After updating iOS, restoring the network settings to their initial state may help resolve connectivity issues if the iPhone is experiencing any of the following.
1. Wifi is not working, not connecting, or disconnecting frequently.
2. Bluetooth doesn't work properly.
3. You can't make or receive calls.
4. The iPhone is showing an unstable signal or only SOS mode.
It is important to emphasize that resetting network settings is not the same as restoring factory settings. Resetting the network settings only clears data related to the Internet, local network, and paired devices, and does not delete any files and browsing history stored on the device.
Step 1: Open the "Settings" app and select "General".
Step 2: Scroll down and tap on the "Reset" option and on the "Reset" screen tap on "Reset Network Settings".
Step 3: Enter your iPhone password as required and click on "Reset Network Settings" again. Wait for a few moments and then you can reconnect to the WiFi network, now check if the WiFi issue on your iPhone has been resolved.
If all the above methods fail and the iPhone still can't connect to the wireless network stably, you can try to fix WiFi issues on iOS 17/18 by upgrading to iOS, it is a common measure. Or you can downgrade the iOS to a supported one.
iSunshare iOS Repair Genius is a powerful tool that not only fixes most of the iOS bugs on iPhone and iPad devices but also helps you easily upgrade or downgrade iOS, including auto-detecting to the latest version of iOS beta or downgrade iOS 18 on your iPhone. If you are looking for a one-stop iOS solution, then it should be the perfect choice for you.
If none of the above methods work, restoring your iPhone might help resolve deeper system issues:
Step 1: Connect your iPhone to a computer and open Finder (Mac) or iTunes (Windows).
Step 2: Put your iPhone into Recovery Mode. For iPhone 8 and later: Press and release Volume Up, press and release Volume Down, then hold the Side Button until the recovery mode screen appears.
Step 3: Choose Restore and set up your iPhone as new.
1. Why wifi not working on iphone but working on other devices?
There might be something wrong in your iPhone network settings. You can reset the network settings or reset the DNS setting to get it solved.
2. What should I do if the Wi-Fi option is grayed out?
This may indicate a hardware issue. Try resetting network settings or contacting Apple Support for assistance.
3. My iPhone cannot connect to Wi-Fi after upgrading, what to do?
Software bugs, incompatible settings, or network-related issues may cause this problem. Resetting network settings or updating your iOS can often fix it. Besides, you need to make sure both router and Wi-Fi works normally. After that, you can disconnect the Wi-Fi and connect it again.
In most cases, you can fix the Wi-Fi network not working issue on your iPhone with the methods shared above, of which upgrading iOS should be the most effective solution. If you still have WiFi issues on your iOS device, you can choose to use iSunshare iOS Repair Genius to give your device a deeper fix. I hope these can be helpful for you.
