How to Fix iOS 17 WiFi Issues


WiFi issues are common when updating to a new version of iOS 17 is no exception, with some users reporting problems connecting to networks or slow internet speeds after installing the latest update. Fortunately, there are several steps you can take to Fix WiFi Issues on your iPhone or iPad running iOS 17.

In this guide, we will cover the most common fixes and solutions for iOS 17 WiFi issues, including:

  • Disabling VPN
  • Restarting your device and router
  • Resetting network settings
  • Forgetting and reconnecting to WiFi networks
  • Disabling WiFi Assist
  • Changing DNS server settings
  • Using iOS repair software

Follow the solutions below to get your WiFi working properly again on iOS 17.

Solutions for iOS 17 WiFi Issues

1. Disable VPN

If you have a Virtual Private Network (VPN) enabled on your iPhone or iPad, it can sometimes cause connectivity problems with WiFi networks after an iOS update.

To check if VPN is enabled:

  • Go to Settings > VPN
  • Check if any VPN configurations are turned on

If so, toggle the VPN switch off for each one listed. Then try reconnecting to your WiFi network. Disabling VPN is one of the easiest fixes for iOS 17 WiFi problems.

2. Restart Your Device and Router

Something as simple as restarting your iPhone/iPad and wireless router can get WiFi working again after iOS 17.

Follow these steps:

  • On your iPhone or iPad, go to Settings > General > Shut Down. Wait 30 seconds, then turn your device back on.
  • Unplug your wireless router from power for 1 minute. Plug it back in and let it boot up fully.
  • Reconnect your iPhone to the WiFi network.

Restarting can clear out any software bugs or glitches affecting connectivity. Be sure to also restart your cable or DSL modem in some cases.

3. Reset Network Settings

Resetting all network settings on your iPhone or iPad will clear any problematic WiFi configurations and allow fresh connections.

Go to Settings > General > Reset > Reset Network Settings.

This will wipe all WiFi passwords, VPN settings, and other networks from your device. You will need to re-enter your WiFi passwords afterwards.

4. Forget then Reconnect to WiFi

Forgetting a WiFi network forces your device to freshly reconnect as if it’s a new network.

To forget a WiFi network:

  • Go to Settings > Wi-Fi
  • Tap the “i” icon next to the problem network
  • Select Forget this Network
  • Reconnect to the WiFi manually

Try this if you can see a network but can’t connect to it or have speed issues.

5. Disable WiFi Assist

The WiFi Assist feature in iOS can switch your device to cellular data if it detects your WiFi connection is poor. This helps maintain internet connectivity.

However, WiFi Assist may sometimes aggravate connectivity issues on certain networks after an iOS update.

You can disable it by:

  • Going to Settings > Cellular
  • Scrolling down and toggling Off Wi-Fi Assist

See if turning off WiFi Assist resolves any problems connecting to or using WiFi networks.

6. Change DNS Server Settings

Incorrect DNS server settings can prevent your device from resolving internet hostnames and cause WiFi issues.

Most people should use the default Automatic DNS settings. But you can try manually setting DNS to see if it fixes connection problems:

  • Go to Settings > Wi-Fi
  • Tap the “i” icon next to your network
  • Select Configure DNS
  • Choose Manual
  • Enter and for Google DNS

This may help if certain sites or services won’t load properly over WiFi after installing iOS 17.

7. Use iOS Repair Software

If you still cannot connect to WiFi normally in iOS 17, you may need to use system repair software like UltFone’s iOS System Repair to fix WiFi problems without losing any data.

This program can fix over 130 iOS system issues by performing an advanced system diagnostic and targeted repair of problems in iOS.

Key steps when using UltFone iOS System Repair for WiFi issues:

  1. Download and install the software on a Windows or Mac computer.
  2. Connect your iPhone or iPad to the computer via USB cable.
  3. Put your device into recovery mode when prompted.
  4. Let the software scan your iOS system and detect the WiFi problem.
  5. Click Repair to begin resolving the WiFi bugs.
  6. Your iPhone will restart once finished, and WiFi should now work properly.

This repair process only takes a few minutes without data loss. It’s an effective solution for even long-standing WiFi bugs persisting through multiple iOS updates.

Common iOS 17 WiFi Bugs

Here are some of the specific WiFi-related problems users are seeing after updating to iOS 17:

  • Unable to connect to any WiFi networks
  • Saved WiFi network passwords forgotten
  • Connects but no internet access
  • Very slow WiFi speeds
  • Frequent disconnects from WiFi
  • “No Internet connection” error in Safari
  • Can’t update or download apps over WiFi
  • WiFi settings screen is slow or crashes

These types of problems indicate software bugs rather than hardware defects with your iPhone WiFi antenna. Generally, the solutions listed above can resolve the issues by resetting network settings or updating device configurations.

For problems extremely persistent across multiple restarts and troubleshooting steps, a full system repair using iOS repair software is most effective.

When to Restore or Update iOS

If you still experience WiFi problems in iOS 17 after trying all other basic fixes, a restore or update may be necessary:

iOS Restore – This will completely erase your device and reinstall iOS. All settings and data will be deleted unless you have a backup.

iOS Update – Try updating to the latest version of iOS 17 from Settings if a newer update is available. This can potentially fix bugs.

Both options should only be done as a last resort. Use the troubleshooting tips first, as they will preserve your data and settings.

Preventing Future iOS WiFi Issues

To help avoid WiFi problems when installing the next major iOS update, here are some tips:

  • Update to the latest iOS version before new updates
  • Back up your device data regularly
  • Write down WiFi passwords in a safe place
  • Reset network settings right before updating
  • Disconnect VPN before installing iOS updates

This will minimize software conflicts and ensure your networks are configured properly for new iOS versions.


WiFi connectivity issues in new iOS versions are common but can be irritating to deal with. By troubleshooting your WiFi settings, network configurations, and performing resets as needed, you can usually get WiFi working properly again on iOS 17.

Advanced repair software like UltFone provides a foolproof fix for even serious WiFi bugs by repairing damaged system files and network components in iOS. With the right solutions, you can get seamless WiFi performance in iOS 17.

Frequently Asked Questions

Q: Why does my iPhone WiFi stop working after updating iOS?

A: Major iOS updates like iOS 17 can sometimes corrupt WiFi settings or cause conflicts with existing network configurations. Resetting networks and updating configurations usually resolves most problems.

Q: How can I fix an iPhone that shows WiFi networks but won’t connect?

A: If your iPhone lists WiFi networks but fails to connect, try forgetting the network and reconnecting from scratch. Also reset your router and disable VPN if enabled.

Q: Why is my WiFi so slow after updating iOS?

A: iOS updates can mess with DNS server settings that affect internet speeds over WiFi. Manually setting DNS to and could potentially fix slow WiFi.

Q: Should I just erase my iPhone and start over if I have WiFi issues?

A: No, you should always try troubleshooting steps first like resetting network settings, forgetting networks, changing DNS, etc. Data erasure should only be done as an absolute last resort.

Q: Will my WiFi issues get fixed if I update to the latest iOS 17 version?

A: Possibly, if Apple has released a follow-up iOS 17 update that specifically patches WiFi bugs. Always update to the latest iOS version if you’re experiencing persistent problems.

Table Showing Summary of Solutions

Problem/SymptomPossible Solution
Unable to connect to any WiFi networkRestart device and router; reset network settings; forget then reconnect WiFi; disable VPN
Connected but no internet accessReset network settings; change DNS to and; disable WiFi Assist
Very slow WiFi speedsDisable WiFi Assist; change DNS server settings
Frequent WiFi disconnectionsForget and reconnect WiFi network; disable VPN
Errors like “No internet connection” in SafariReset network settings; disable WiFi Assist; change DNS
Can’t download apps over WiFiReset network settings; forget and reconnect WiFi; disable VPN

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