How to fix an iPhone 11 Pro Wi-Fi internet connection that is very slow after updating to iOS 13.2.3

If websites, web pages, and other online resources take so long to load up, then you’re likely dealing with a problem on slow browsing. Slow browsing issue is when your actual download speed is way too slow than what you are supposed to get based on your data subscription. Internet problems like this can be attributed to various factors from browser issues to ongoing outages. In other cases, account-related issues are the underlying cause. Random firmware issues on the network equipment like when the modem or router system gets corrupted can likewise be the possible triggers. In worst case scenarios, hardware damage on the affected device or network equipment are to blame. Tackled in this post is a similar issue on the iPhone 11 Pro, which Wi-Fi internet connection suddenly gets very slow after updating to iOS 13.2.3. Read on to find out what to do if your iPhone’s internet connection suddenly slows down from an update.

Troubleshooting a problem on the iPhone 11 Pro Wi-Fi internet connection that’s very slow after updating iOS 

The following procedures will help you eliminate the common factors that can slow down your iPhone’s wireless internet connection. Among the factors that these methods would eliminate are random firmware issues on the modem/router in use as well as random system errors and glitches inflicted by minor post-update bugs on the iPhone 11 Pro. 

Before your begin, make sure you are close to where the wireless router or modem is located. The farther your iPhone is from the internet source, the weaker the signal it gets. If the signal is weak, there’s a higher chance for your internet connection to become sluggish and intermittent. If necessary, move closer to your wireless router or modem and then see if that speeds up your internet connection. If it doesn’t do any good and that your iPhone’s internet connection remains very slow, go ahead and try implementing each of the following procedures.

You can use free speed test platforms such as or to test your internet speed after carrying out each of these subsequent solutions.

First solution: Power cycle the router/modem then restart your iPhone.

Most internet service providers would recommend working on the main source of the internet connection that is either a wireless router or modem. And the very first potential solution ISPs would recommend is the method called modem/router power cycle. It’s a straightforward solution to minor firmware crashes affecting the network equipment. If you can access your modem or router right now, follow these steps to power cycle it:

  1. Turn off the modem/router by pressing on the power button until it powers down.
  2. While the modem/router is completely turned off, unplug its AC adapter from the power source and keep it unplugged for about 30 seconds to 1 minute.
  3. After the elapsed time, plug it back in and turn it back on again.
  4. Wait until all the light indicators on the modem/router becomes stable. 

Your iPhone will then re-establish Wi-Fi signal and then connects to your Wi-Fi network (if you’ve configured your phone to auto-connect). If it doesn’t connect to your Wi-Fi network automatically, then you’ll have to do it manually.

After power cycling the network equipment, perform a soft reset on your iPhone 11 Pro with these steps:

  1. Press and hold both the Side and Volume Up buttons for a few seconds.
  2. Release both buttons when the Slide to Power off bar appears.
  3. Swipe or drag the bar to turn your device off.
  4. After about 30 seconds, press and hold the Side button and then release when the Apple logo appears.

If you are using Safari as your browser app, clearing the browser’s cache, cookies and browsing data can also help speed up your browsing speed. Just follow these steps:

  1. From the Home screen, tap Settings.
  2. Select Safari.
  3. Tap the option to Clear History and Website Data.

If you wish to clear cookies but keep your browsing history, do this instead:

  1. Go to Settings.
  2. Select Safari.
  3. Tap Advanced.
  4. Select Website Data.
  5. Then tap the option to Remove All Website Data.

After clearing the Safari cache and internet data, quit/end the app then launch it again. Retry navigating to various websites and pages to see if your browsing speed has improved. If the internet remains very slow, try other methods to rule out other factors.

Second solution: Disconnect Wi-Fi on your iPhone then reconnect.

Your current Wi-Fi connection might have been ruined by the recent update and therefore becomes unstable. Should this be just inflicted by minor system flaws, restarting/refreshing your iPhone’s internet connection will likely fix it. There are many ways for you to get this done. You can refresh your Wi-Fi internet using the Wi-Fi toggle or by carrying out the Airplane Mode trick. You can also delete and re-add the Wi-Fi network on your device if neither of the first two methods yields some positive results. Here’s how to refresh your phone’s internet using the Wi-Fi toggle:

  1. From the Home screen, tap Settings.
  2. Scroll to and select Wi-Fi.
  3. Toggle the Wi-Fi switch to turn the feature off.
  4. After a few seconds, toggle the switch to turn Wi-Fi back on again.

Allow your iPhone to reconnect to Wi-Fi and then try browsing through websites and pages again to see if your internet connection has sped up.

Alternatively, you can use the Airplane Mode trick to simultaneously turn off your iPhone’s wireless features and then turn them back on again. A lot of iPhone owners have found wonders from doing this trick whenever wireless internet issue arise. Thus, it won’t hurt if you’d give it a try and see if this will get your slow internet speed fixed. Just follow these steps:

  1. From the Home screen, tap Settings.
  2. Scroll down and tap on Airplane Mode.
  3. Toggle the Airplane Mode switch to turn the feature ON. Doing so disables your iPhone’s wireless radios and associated features like Wi-Fi and Bluetooth. 
  4. While Airplane Mode is turned on, reboot or soft reset your iPhone to clear out network cache.
  5. After it reboots, go back to Settings-> Airplane Mode menu.
  6. Then toggle the Airplane Mode switch to turn it OFF again.

If none of the first two methods worked, then you can resort to Wi-Fi network deletion and re-adding. This is usually needed if the Wi-Fi network you’re using has become corrupted from the recent update. Just follow these steps whenever you’re all set to forget Wi-Fi network on your iPhone 11 Pro:

  1. Go to your iPhone Settings-> Wi-Fi menu then make sure that the Wi-Fi switch is turned on.
  2. Scroll down to the list of available Wi-Fi networks and then select the network that your iPhone is connected to.
  3. Tap the information “i” icon next to the name of the selected Wi-Fi network.
  4. Then tap the option to Forget this Network.
  5. If prompted, tap Forget Network to confirm network deletion.

If you see any unused Wi-Fi networks saved on your phone, remove them all using the same method. This will help prevent your iPhone from connecting to other open Wi-Fi network, especially after it reboots.

After forgetting Wi-Fi network, turn the Wi-Fi switch off then restart/soft reset your iPhone. As soon as it’s finished rebooting, head back to Settings-> Wi-Fi menu, then toggle the switch to turn Wi-Fi back on again. Then you will need to reconnect to your Wi-Fi network like the first you did. That said, be sure to enter the correct Wi-Fi password to ensure that network access is granted.

Third solution: Update carrier settings to fix your iPhone 11 Pro Wi-Fi internet connection that’s very slow after an update.

Network-related issues including those attributed to some minor iOS bugs can also be remedied by carrier settings updates. These updates are separately released by your carriers to address existing network problems affecting various devices. Entrenched into these updates are not only new network features but also some dedicated network patches that are designed to address minor and major flaws affecting the network system of your iPhone. The following steps will walk you through manually downloading and installing carrier settings update available for your iPhone 11 Pro using iTunes. Here’s how it works:

  1. Connect your iPhone to the computer and then open iTunes. Be sure to use the latest version of iTunes app to avoid bumping into some system conflicts.
  2. Wait for your device to sync and back up with iTunes.
  3. Click to select your iPhone 11 Pro when it appears in iTunes.
  4. Navigate to the Summary section and then hold down the Shift key on the keyboard and click Check for Update. Doing so will prompt iTunes to install an iOS image (*.ipsw).
  5. Change the file type to iPhone/iPad Carrier Configuration File (*.ipcc).
  6. Select the desired file and then follow the rest of the onscreen instructions to complete the process.
  7. When the carrier update installation is complete, turn your iPhone off and then disconnect it from the computer.

All recent carrier settings updates should then be implemented the next time you turn your iPhone back on.

Fourth solution: Reset network settings on your iPhone.

To deal with internet problems, particularly slow internet browsing inflicted by erroneous network configuration, performing a network reset can help. This reset will erase all your current network configuration and network preferences along with any network errors that caused your internet connection to slow down from an update. Just take note of your Wi-Fi password because you will need to re-enter it afterwards in order to reconnect to your Wi-Fi network and get back online. Just follow these steps if you wish to proceed with this reset:

  1. From the Home screen, tap on Settings.
  2. Select General.
  3. Scroll down and tap on Reset.
  4. Tap Reset network settings from the given options.
  5. Enter your passcode if prompted to continue.
  6. Tap on Reset network settings again to confirm action.

Performing this reset doesn’t affect any saved data on your iPhone so all your downloaded files and personal information remain untouched.

Fifth solution: Factory reset your iPhone.

A factory reset is usually needed when dealing with complex system errors that could not be rectified by the previous methods. Performing this reset will wipe everything from your iPhone system including all your downloaded content, apps, customized settings, and other saved data. Stubborn bugs including those coming from the recent update will also be obliterated. That said, your iPhone will likely be totally free from any software issues afterwards. Just don’t forget to back up all your important files beforehand so you’d still be able to recover them later. The following steps will help you perform a factory reset through your iPhone settings:

  1. From the Home screen, tap Settings.
  2. Select General.
  3. Scroll down and tap on Reset.
  4. Select the option to Erase all content and settings. This will erase everything from your iPhone system including all saved data on the internal memory.
  5. Enter your device passcode if prompted to continue.
  6. Then tap the option to confirm that you want to erase your device.

After the reset, you can use the start-up wizard to set up your iPhone as new.

Last resort: Restore your iPhone in iTunes (Recovery Mode Restore).

If the slow browsing problem on your iPhone 11 Pro isn’t resolved by a factory reset, there’s a higher chance that you’re dealing with a major iOS bug, if not a temporary network outage. If you wish to troubleshoot further and rule out stubborn iOS bugs from the underlying cause, then restoring your iPhone 11 Pro in iTunes via recovery mode can be the next option and possible solution you can try on. Just follow these steps whenever you’re all set to restore your iPhone:

  1. Connect your iPhone to a computer using the original USB cable or Lightning cable that came with it.
  2. Open iTunes on your Windows and/or earlier Mac computer or Finder on your Mac running macOS Catalina.
  3. While your device is connected, quickly press and release the Volume Up key. 
  4. Then quickly press and release the Volume Down key.
  5. Next, press and hold the Side button until the Connect to iTunes or recovery mode screen appears. Do not release the button if you  see the Apple logo as you’ll need to boot your phone in recovery mode.
  6. Follow the rest of the commands to restore and fresh install the firmware on your iPhone through iTunes.

Give your iPhone enough time to finish restoring the system. Once the entire process is complete, you can disconnect your device from the computer and force restart to switch back to normal mode. See if that solves your iPhone 11 Pro’s slow internet connection.

Is your iPhone 11 Pro Wi-Fi internet connection still very slow?

Software-related factors that can slow down internet connection are usually eliminated by any of the aforementioned procedures. If your iPhone is still enduring the same problem on slow internet, then you should contact your internet service provider to report the problem for further assistance. There might be some complex network connection errors that require more advanced troubleshooting methods in order to be rectified.

Alternatively, you can escalate the problem straight to Apple Support. The fact that the onset of the problem was after an iOS update makes it viable that you’re dealing with yet another iOS internet bug to fix.

ALSO READ: Dealing with various Internet and Network problems on iPhone 11 Pro after iOS 13.2.3 update