How to clear DNS cache on iPhone and iPad

Our dependence on screens has led to a large buildup of data cache on our iPhones. Along with the data saved on our devices, this cache also contains the DNS cache, which contains our surfing preferences. While the purpose of this caching mechanism is to improve our customised experience, it can occasionally cause problems with your iPhone.

The following instructions will walk you through the process of cleaning away the DNS cache on your iPhone and iPad running iOS 16 in order to help you prevent this issue and ensure a fluid and optimised surfing experience.

How to flush DNS cache on iPhone and iPad

Flushing the DNS cache can frequently be the answer to a number of difficulties, including slow internet connectivity, DNS-related problems, or simply wanting to update your device’s DNS settings.

There are 4 ways to do it, and all of them have been listed below.

1. Airplane Mode

Enabling Airplane Mode tends to disable every wireless feature and shuts down radio services on your device. This is the quickest way to flush your DNS cache on your device on the go. To do so:

  1. Access Control Center on your iPhone by swiping down from the upper right corner of the screen. 
    In case you’re operating an iPhone with Home Button, swipe up the bottom edge of the screen.
  2. Tap the Airplane Mode icon.

    Refresh cellular network using Airplane mode
  3. Alternatively, you can navigate to Settings → Toggle on Airplane Mode.

    Enable Airplane mode on iPhone
  4. Wait for 15-20 seconds before turning off the Airplane Mode.

You can repeat this trick multiple times a day and ensure that your device remains clear of the DNS cache.

2. Resetting network settings

If you wish to be certain while getting rid of the DNS cache on your iPhone, you can reset your network settings.

In my opinion, although this method is effective, it’s a bit too much. It will end up removing every saved Wi-Fi password in your device. So please follow these steps after careful consideration.

  1. Launch the Settings app.
  2. Navigate to the General option and access Transfer or Reset iPhone.
  3. Tap Reset to proceed.

    Tap general, Transfer or Reset iPhone, reset in settings
  4. Now hit Reset Network Settings.
  5. If prompted, enter the passcode of your device.

    Tap reset network setting, enter passcode in settings

Remember that if you go through with this procedure, your network settings, passwords, and preferences will be removed. Hence, you will have to set it up again.

3. Clear browser cache

It might not always be necessary to entirely clear the DNS cache from your iPhone. It’s possible that you will just need to delete the cache for a single browser.

I’ve included comprehensive instructions on how to clear the cache for two of the iPhone’s most popular browsers below to make the process easier for you:

By following these guides, you can effectively manage and optimize your browsing experience on your iPhone.

4. Reboot your iPhone or iPad

After reading this far, if none of the methods listed above don’t seem doable to you, it’s time to go for the most straightforward method. Yes, you are correct in your guess. So let’s finish this up.

Restarting your phone will clear the DNS cache on your system, depending on the iPhone model you have. A system restart, however it can take a little longer, can solve almost all problems.

Benefits of clearing out DNS cache on iPhone

When a user returns to previously visited websites, they will load more quickly thanks to the DNS cache, which saves information about those websites. On an iPhone or iPad, cleaning the DNS cache is an essential step in maintaining the device’s efficiency and preventing potential security threats.

  • Over time, this cache can become cluttered with outdated or incorrect information, leading to slower loading times and website errors.
  • A compromised DNS cache can be used to redirect a user to fraudulent websites or inject malware into their browser.
  • Clearing out the DNS cache periodically ensures that the device is accessing accurate and secure information for safe browsing. It also helps improve network connectivity issues by resolving any conflicts related to old, cached data.
  • Clearing your iPhone cache is essential for maximizing performance, fighting security threats, and ensuring reliable connectivity.


How do I know if my DNS cache is cleared on my iPhone?

After using any of the methods outlined above, try to pay attention to the little things, such as how long it takes to connect to a new website or load a new search query. If the response time is quicker, you’ve been successful in clearing your device’s accumulated DNS cache.

Does clearing the DNS cache speed up the Internet on my iPhone?

By resolving any obsolete or faulty DNS information, clearing the DNS cache has the potential to increase your internet speed. It enables your device to retrieve the most precise DNS entries, speeding up connections to webpages and other internet resources.

How often do you need to clear the DNS cache on my iPhone?

There is therefore no set period of time for emptying the DNS cache. Usually, it is a stage in the troubleshooting process rather than a regular maintenance chore. When you experience network problems or if you wish to update your DNS settings, you should clear the cache.

How to clear the DNS cache on Mac?

Please hover through our detailed guide on clearing the DNS cache on Mac to get your issue rectified in a few simple steps.

Happy Browsing!

In conclusion, cleaning the DNS cache can help you without any bother if you are having problems with your iPhone or iPad’s DNS, such as trouble accessing websites. Fortunately, clearing the DNS cache on these devices is an easy operation that only requires a few quick steps. So give these techniques a try and resume browsing without annoying DNS latency.

Thank you for reading. If any, share your thoughts in the comment section below.


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