[Full Guide] 50+ iOS 18 Bugs and Fixes You Should Know 2025

The release of iOS 18 brought with it a host of new features as well as improvements. However, like any major update in the past, this one also has many bugs.

From the battery drain to the system glitches, it's important to know exactly what the issues are and how to fix them. As such, this guide will detail the iOS 18 bugs and provide the corresponding bug fixes. By following these methods, you can get your Apple device back to normal in no time.

We've also prepared a video for you on how to fix so many iOS 18 bugs in 4 regular methods:

In iOS 18 update, the first complaint from users is a series of battery-related bugs. These problems affect everyday usage of iPhone/iPad and leave people overwhelmed. This section will discuss common iOS 18 battery issues and effective ways to fix them.

1 iPhone Battery Draining Fast

One of the most typical battery-related issues is that iPhone battery drains fast, making them need to charge their iPhone more frequently.

Normally, after a major system update, your iPhone may perform background tasks like re-indexing files, updating apps or optimizing settings. It's these activities that make your device consume more power than usual.

If your iPhone battery life is shorten or draining fast all of a sudden, here're a few tips to fix it.

2 iPhone Battery Not Holding Charge

You may also find that your iPhone battery just can't seem to keep up after updating to iOS 18, with the battery fail to hold a charge for long.

This common issue could stem from new iOS features, software bugs, or even battery health concerns. To solve this problem, please check out the following solutions to see if they help to get your iPhone battery charged as usual.

3 iPhone Gets Hot When Charging

While a slight temperature increase during charging is normal, excessive heat can indicate that there might be a problem that could affect your device's performance or battery health.

iPhone overheating when charging is a typical iOS 18 heating issue that can be found in so many iOS 18 bugs. To stop your iPhone heating up while charging, you may need the following solutions.

4 iPhone Won't Charge Past 80%

If you've enabled the 80% limit, then iPhone only charges to 80% seems quite normal. However, it can affect your phone's usability if your iPhone refuses to charge beyond 80%, especially when you need a full battery to get through the day.

How to fix the problem of iPhone won't charge past 80%? Below are some measurements you can consider to fix the iOS 18 charging issues here.

iOS updates can sometimes lead to performance problems that affect your overall experience. This section will dive into some of the iOS 18 issues about common performance and provide practical solutions to get your iPhone run smoothly again.

1 iPhone Laggy

The smoothness of the iPhone system has always been one of the reasons why Apple users love it, but after upgrading iOS 18, some users have reported that their iPhone laggy seriously.

Insufficient storage is a common cause, as newer iOS has many activities running in the background, retaining some cache or unnecessary data. To make your iPhone less laggy, please check out the following solutions.

2 iPhone Overheating After Update

What do you do when you've happily updated to iOS 18 only to find that your iPhone overheating for no apparent reason? You might think it's just a random situation, but when you just want to watch a 2-minute YouTube video but the iPhone is still very hot, the problem becomes a bit tricky.

Updating the system is supposed to be a convenience for us but not a bad influence. Here are some regular solutions to this iOS 18 bug.

3 iPhone Stuck on Apple Logo Due to Full Storage

When your iPhone storage is occupied by too many videos, photos or files, it may shut down because storage is full. However, there is also a situation where you still have enough memory on your iPhone, but the device suddenly becomes full after updating to iOS 18.

How to fix when iPhone run out of storage full and stuck on Apple logo? We've concluded some useful tips for you.

4 iPhone Touch Screen Not Working

After updating iOS 18, many users have reported their iPhone touch screen not responding, one of the typical iOS 18 screen issues. When this happens, you may experience issues such as your iPhone screen freezing/crashing, which makes you unable to use the iPhone.

iOS 18 system problems are typically related to the operating system’s core functions. These can include glitches in system updates, or malfunctions in features like storage. Such problems can disrupt the seamless operation of your iPhone. Below, we delve into some of the system bugs in iOS 18 and offer practical fixes to resolve them.

1 iPhone Stuck in Black Screen

After upgrading to iOS 18, some users reported that their iPhone stuck on black screen not turning on. This may be caused by the incompatible iOS system. In this case, your iPhone may not be able to start up or enter the home screen normally.

2 iPhone Keeps Restarting Itself

Many users who have upgraded to iOS 18 have reported that just when he was going to enjoy the new features after updating the system, the iPhone keeps restarting itself, making it impossible for them to access any of the iPhone features.

3 iPhone Stuck on Apple logo

iPhone stuck on Apple logo after iOS 18 update is one of the serious issues with iOS 18. When there are connectivity issues, software outages, iOS download errors, or other bugs during the upgrade process, it can cause the iPhone to become bricked.

4 iPhone Stuck in Recovery Mode

Recovery mode is used for updating or restoring iPhone. By pressing certain buttons, you can enter recovery mode to fulfill other purposes. However, iPhone users reported that after iOS 18 update, his iPhone gets stuck in recovery mode for no reason.

5 iPhone Keeps Turning On and Off

One problem that has been voted in Reddit said:"My iPhone turns off and on repeatedly after iOS 18 update. It goes from a black screen to the Apple start up screen then back to the black screen. About 30 minutes of doing this it will come up to my home screen and as soon as I enter my passcode it will bring up my apps and then shut down again."

iPhone turns on and off is quite common when you made a big system update like the iOS 18. To ensure that you can use the device as usual, here're some solutions.

6 iPhone Won't Turn On After iOS 18 Update

After updating to iOS 18, instead on booting up, the iPhone won't turn on. If you are also one of the victims, then the following methods can help you solve this iOS 18 update issue.

7 iPhone Ghost Touch

Some of you may attribute this iPhone ghost touch problem to performance-related problem, but some of you may think this problem may be due to system-related. Whatever the reason, here're some bug fixes below.

In addition to the above issues, after updating the iOS 18 system, many people find that some of the features of the iPhone have become problematic. Let's see what are they and how to fix them.

1 iPhone System Data Overflow

Some users have experienced system data overflow with iOS 18 as well. Over 29G of system data keep writing into the iPhone storage till full, and it was unresponsive once in a while. If it is not dealt with carefully, your iPhone may shut down for full storage.

2 Dynamic Island Spinning Abnormally

A Twitter user reported that when Face ID verification is performed after the app gets locked, the dynamic island rotates if the screen is not locked. And Apple may fix this bug later.

3 Wi-Fi Not Working

Some users may experience iOS 18 WiFi issues, which includes slow Wi-Fi speed, unstable connection, or even Wi-Fi disconnection.

For some users, the Wi-Fi icon on the device may disappear suddenly, or the icon may remain unconnected even if the user actually connects to the Wi-Fi network successfully. This makes it impossible for users to identify the current Wi-Fi connection status.

4 iOS 18 Screen Time Bug

In the list of iOS 18 bug problems, the screen time problem is typical. Users cannot access screen time settings nor turn off the annoying "Screen Distance" feature.

What's worse, some users find that there is no data on the screen time even when the iPhone has been used for the whole day. Trying using ipad to change the screen time settings failed as well Let's see how to fix this Screen Time issue on iOS 18.

5 Lock Screen Notifications Not Working

After iOS 18 upgrade, many users reported this same problem: There is no notifications from text or calls, nor sound or pop up on the lock screen.

When trying to pull up, users can’t tap them because they force back down to the bottom on top of one another.

6 Home Screen Not Loading

Among iOS 18 problems, ne user claimed that his Home Screen not loading after deleting a widget, and when trying to unlock, the iPhone will go back to the lock screen. This may happen occasionally and should be fixed in the next iOS update.

7 Swipe Down Control Center Not Working

There are lots of new changes to the Control Center in this iOS 18 upfrade. But some users reported that moving around things in the control center is a bit janky.

What's worse, after sliding the control center panel down from the top right, you can't slide it back up from the bottom half of the screen. You have to close it by scrolling from the very bottom of the screen, which is uncomfortable.

If that's the case, you can choose to downgrade from iOS 18 or wait for the next system update, which should be a more stable version.

8 Could Not Authenticate Error in Lock App

You can lock an app in iOS 18, but if you cancel it, your iPhone may pop up a window with the "Could Not Authenticate" error on it. And all you have to do is wait for a public beta to fix this problem.

9 Keyboard Input Glitching

In the iOS 18 update, the iPhone keyboard malfunction issue is also mentioned by many users. When using the iPhone keyboard, users may encounter keyboard inaccurate, lag, types on its own, which is quite annoying.

10 Eye Tracking Fails Immediately

As the new feature, eye tracking receives much attention. One typical problem with this feature is that the cursor was just flickering all over the screen no matter what the user looked at.

This should be improved and noticed by Apple. You can wait for the next update.

11 Music Haptics Not Working

One user from Reddit said that the music haptic doesn't work after iOS 18 update, nor does it show up in iPhone settings.

12 iOS 18 Automatically Corrects Any Words to English

Apple will auto-correct what you're typing if there is some grammar mistake, this is nothing new. But it seems that the iOS 18 will automatically corrects any words to English, like French to English, which can be frustrating.

13 Customize Button Not Working

Some users reported that the buttons for customization just stopped working, buttons from Control Center like Bluetooth also run into the same problem, making it a challenge to control the Home Screen.

14 Apps Not Updating Automatically

iPhone supports switching light/dark mode. But this feature is affecting your iPhone in terms of apps updating. some users on Rediit said that the apps won't update as usual when the dark/light mode is switched between.

15 Hotspot Won't Disconnect

Generally speaking, after 10-15 minutes, the personal hotspot is supposed to automatically turn off if no other devices are connected to it. But this is not the case with iOS 18 update.

To solve this problem, please check if your hotspot is connected by your Apple Watch or other devices. If not, try force restarting your iPhone.

16 Bluetooth Not Working

Many users report that their iPhone's Bluetooth not working after the iOS 18 update, causing several disruptions. These iOS 18 Bluetooth issues range from devices failing to pair, random connectivity, or Bluetooth not functioning at all.

17 Cellular Data Not Working

Are you experiencing the iOS 18 cellular data issues after making the update? The primary problems include random disconnections from the cellular network and apps not working on cellular data because it's greyed out.

To solve the iOS 18 network issues, you can try the following methods.

18 Screen Brightness Dimming

Everything seems fine but when you're at a bright place, take your iPhone out of the pocket and turn it on, the brightness doesn’t turn up as it should be.

This is something new in terms of so many iOS 18 bugs. Let's see how to make your screen brightness adjust itself.

19 GPS Not Working

The GPS feature becomes unusable after iOS 18 update? A few users have run into this problem abruptedly. It's causes certain inconvenience when you need the navigation.

20 iPhone No Service

Among iOS 18 bugs, iPhone no service is reported by many users. If you're out of your carrier's service area, the settings is misconfigured or for other reasons, the iPhone will show no service.

Here're several problems with the built-in apps after updating to iOS 18. Let's see what they are and how to fix.

1 Email App Not Working

The Email app just stops working after iOS 18 update. More specifically, this iOS 18 email issues refer to users can't send or receive any email through the app, nor getting any notifications from the Mail app, it's crashing.

2 Shortcuts Not Working

One common problem to most of the users is that their Shortcuts are not running automatically or not responding to Siri commands.

In other words, the automation task can't be triggered properly, and the process is interrupted, they even can not edit the task.

3 CarPlay Not Working

Users may encounter the following iOS 18 Carplay issues like the CarPlay can't connect, can't be detected, or disconnect frequently. Some CarPlay features may not function properly and need to be reconnected to return to normal.

4 Calculator Not Working

The iPadOS 18 comes with the Calculator finnally! If you find it not working, please check out the following solutions to fix the iOS 18 calculator issues and start your first trial in the iPad.

5 Math Notes Not Working

The Math Notes calculator allows users to type or write out mathematical expressions and see them instantly solved in their own handwriting, which is quite convenient for anyone who need to work with mathematical equations and expressions. But if it has bugs, you have solutions too.

6 Safari Not Working Smoothly

There are 3 main problems with the Safari in this iOS 18 beta update: you can’t close a tab by swiping on it from the tab menu; you can't straight up switch tabs from the tab menu; swiping the address bar to switch tabs is laggy.

If Safari not working on iPhone/iPad, you can refer to this article for more detailed solutions.

7 Photos in Potato Quality

A Reddit user said that he has encountered an iOS 18 photo bug, which is all of his photos are in potato quality, referring to those photos that are exceptionally poor quality, low-resolution, grainy, or blurry.

In this case, you can downgrade from iOS 18 to 17 or wait for the public beta to be released.

8 Phone App Not Making Calls

After the iOS 18 beta update, some iPhone users conplained that iPhone can’t make or receive calls, probably due to the software glitches, carrier bugs, etc.

You may see the "Call Failed" screen when trying to dial.

9 Camera App Frozen

For the Camera app here, some users complained that when they launch the app, it does render the first few frames it receives from the camera itself and then freezes, if later switch modes or lens, the camera just turns black. Let's see how to fix these iOS 18 camera issues.

10 Contact App Turns White

The bug in the Contact app is that the app turned white/blank when in large icon mode, And the Contact icon may even end up not showing up.

You can try to delete the app from the Home Screen and then add it again to the home page.

11 Widget Stuck on Light Mode

An user found that after iOS 18 beta update, the widgets on his iPhone stuck on light/white mode weirdly, not changing to the default dark theme he used.

To fix this problem, you can customize under the screen edit to change icon, which should work and stop the Widget from frozen on light mode.

12 Record Phone Calls Will Notify Others

Recording calls is finally possible on iOS 18. Though you can make it as well before, but by using third-party tool.

During a live call, the new call recording feature will appear directly. But the time you press the record button, both you and the other caller will be notified.

If you want to record the calls secretly, this can an issue.

13 iPad Playing Music by Itself

After iOS 18 update, the iPhone/iPad randomly plays music, this is quite awkward when you're in a public place. To stop your device from playing music by itself, here're some solutions.

For third-party apps, there are also existing bugs. And here're some of them and corresponding fixes.

1 Zoom Screen Sharing Not Working

Zoom screen not sharing can happen in different situations, such as the Zoom screen has been locked at either the group or account level; the screen sharing is not enabled; the default settings is not correct.

2 Twitter Screen Freezes

Some users reported that their Twitter screen freezes after the ipdate. It could be due to the poop network connection, the incompatibility between the system and the Twitter app, or because of the improper operation.

3 Facebook Black screen

Facebook black screen or not working is a problem that happens occassionally. You can check this article to see how to fix when this problem happens again after iOS 18 beta update.

4 Telegram Doesn't Have Icon

Every app has its own icon. After updating to iOs 18 beta 1/2/3, some users said that his Telegram is missing the icon. And to fix this problem, you may open telegram and go to settings and appearance and switch to the "filled" option.

We've concluded known bugs that come with iOS 18 update, as well as the corresponding fixes. If none of these solutions help to fix the problems, you can try this iOS system repair tool - iMyFone Fixppo!

Compatible with all iPhone models and iOS versions, Fixppo can fixes various iOS update issues in 5 minutes without any data loss!

Key Features of iMyFone Fixppo:

• No data loss - 4 steps to fix various iOS/iPadOS problems without losing data.
• One-click upgrade/downgrade - Upgrade or downgrade iOS without manually downloading the IPSW file, saving time and trouble.
• High success rate - Fix system-related problems with 99% success rate, easy-to-use for even beginners.
• Free to use - Allow to enter/exit recovery mode in 1 click for free.
• Cover 150+ iOS/iPadOS problems - Fixes iPhone stuck on restore screen, black screen, boot loop, and more.
• Wide compability - Compatible with all iPhone models and all iOS versions, including iPhone 15 series and iOS 17/18.

Let's see how to fix various iOS problems via iMyFone Fixppo.

Step 1: Download and install iMyFone Fixppo to your computer. Open it and then connect your device to the computer via USB.

Step 2: Choose Standard Mode, which will retain all your iPhone data when fixing the iPhone problem.

Step 3: When your iPhone is detected by Fixppo, please click on the Download button to get the firmware for the device that is necessary for the fixing process.

Step 4: When the firmware is downloaded, please click on the Start Standard Repair button to let Fixppo begin to fix the iPhone problems right away.

The fixing process won't take long and your iPhone will be restarted after the process. You can use your iPhone smoothly now!

We've concluded some iOS 18 bugs and fixes so far, hope this post can help you whenever the problem occur.

If you find these solutions complicated, you can try this iOS system repair software - iMyFone Fixppo, the easiest solution to 150+ iOS/iPadOS problems. Most importantly, no data loss after fixing. You can download to have a try!

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Article by

Melvin Cooper

Melvin Cooper has over 10 years of experience in the technology industry and is an expert at providing tips and handy solutions to Apple and Android users. Dedicated to helping millions of users improve their experience with mobile devices, he has maintained an impressive record of solving problems.