Despite Apple's extensive testing and the public and developer beta programs, there are have been a few problems with iOS 11, the newest version of the iPhone and iPad software. As we hear of them we will outline them here, along with any fixes that have been suggested.

If you are having any issues with your iPhone or iPad let us know. There have been reports that iOS 11.4 causes battery drain, while iOS 11.3 bought issues with not being able to connect to the WiFi network, the Touch Screen freezing or buttons becoming unresponsive.

We run through the various versions of iOS 11 that have been issued by Apple in a different article, some of the fixes address issues listed below, so check out our guide to everything you need to know about the latest version of iOS 11, to see whether you should update your iPhone.

Below we will look at some of the key issues and the suggested fixes for them.

iOS 11.4 'causing battery drain'

Is your iPhone battery suddenly not lasting a day? It may be due to iOS 11.4.

Posts on Apple’s support forum - and our own experience - suggest that a recent change to the iPhone OS has caused our battery to drain faster.

There are also reports that iPhones are running hot since installing iOS 11.4.

Possible causes

We wonder if the issue is linked to Messages being backed up to iCloud.

How to fix it...

One thing to check is whether you have a battery drain issue. You can do this by going to Settings > battery and check Usage and Standby (at the bottom of the page).

Your Standby time should be less than Usage time (unless you have been constantly using your phone since you unplugged it.)

If the two are very similar then it may be that you have an issue with a background task causing your battery drain.

Some posts on Apple's forums claim that disabling Handoff features can help.

Alternatively restarting the iPhone may fix the problem.

iOS 11.3 may stop iPhone 7 mic working

Some iPhone 7 and 7 Plus owners are experiencing an issue that means they can’t be heard during phone calls and it sounds like the issue is related to iOS 11.3.

MacRumors obtained an internal document that had been circulated to Apple Authorised Service Providers and explains that customers may experience a greyed-out speaker button during phone calls.

Apparently, when diagnostics is run, the affected devices display a "device could not detect dock" or "accessory not supported" alert.

Although many iPhone 7 models will be no longer covered by warranty, Apple has told the service providers that they can request an exemption for this issue - although it doesn’t confirm that the repair should be completed free of charge.

MacRumors suggests that the issue is related to iOS 11.3 - highlighting that there have been complaints about microphone issues in iOS 11.3 on various forums and the Apple Support Communities. The site speculates that iOS 11.3 is causing a hardware defect.

iOS 11,3 breaks touch screen functionality

Some people who have had the screen on their iPhone replaced experienced issues after updating their iPhone to iOS 11.3.

It was initially thought that the issue - which is causing the touch functionality in some iPhone 8 models to stop working - was linked to the use of non-Apple screens being installed by third parties, rather than Apple. However, it appears that iOS 11 is was causing some issues with genuine Apple displays that have been used to repair broken iPhones.

According to an Engadget report, iPhone 8, 8 Plus and iPhone X models that have been repaired with official Apple display, are unable to adjust brightness automatically. This problem is actually affecting devices running iOS 11.1, iOS 11.2, and iOS 11.3, according to that report.

Companies who perform third-party repairs believe that Apple is disabling functionality on purpose, even though the right-to-repair (using a third-party) is protected by law. 

Aakshay Kripalani, CEO of Injured Gadgets, a repair shop, told Motherboard: “Customers are annoyed and it seems like Apple is doing this to prevent customers from doing 3rd party repair.”

This isn’t the first time Apple has stopped the touch functionality working on repaired iPhones. In 2017 notes issued with an update noted that third-party replacement parts might not work correctly, however, Apple issued an update a week later that fixed that issue.

How to fix it...

Apple has issued an update to iOS to fix the issue.

iOS 11.3.1 arrived on 25 April 2018, bringing with it a fix for iPhone 8 users who’s screen became unresponsive after the iOS 11.3 update. Apple might have fixed this issue, but it appears the company isn't going to let this one lie. Along with the update the company issued a warning to those who have obtained screen replacements from parties other than Apple, indicating that iPhone users should steer clear of "non-genuine replacement displays."

Apple stated in the support notes accompanying the release: "Note: Non-genuine replacement displays may have compromised visual quality and may fail to work correctly. Apple-certified screen repairs are performed by trusted experts who use genuine Apple parts. See support.apple.com for more information."

Apple's decision to issue the fix may have been influenced by the fact that earlier in April 2018 the company lost a case against a Norwegian repair shop that it had attempted to sue for importing counterfeit iPhone screen replacements to replace screens on broken iPhones. The issue appears to have been the fact that the imported screens had Apple logos on them, except these had been covered with a marker pen - the fact that the logo had been covered appears to have been how the Norwegian repair shop won the case. 

Apple is also fighting a right to repair bill that is being pushed into law in the US, currently the law means it is illegal for US vendors to purchase spare parts or carry out repairs.

In the UK repair shops aren't illegal, although if you use one to get your iPhone repaired it will void your warranty.

Siri privacy bug

Thanks to another bug in iOS 11, it is possible to ask Siri to read third-party notifications - including those that are hidden - even if an iPhone is locked.

The bug doesn’t affect iMessage - but it does affect third-party apps, such as Whatsapp and Gmail. In some cases, Siri has read the subject line of emails received in the Mail app.

Apple has confirmed that the issue will be fixed in an upcoming software update. Apple told MacRumors: “We are aware of the issue and it will be addressed in an upcoming software update,” so the best fix will be to wait until that update is issued.

iMessage speech bubble bug

Apple posted a new iPhone X ad on YouTube at the end of March - only to re-upload it a few days later after someone noticed that the ad showed an iOS 11 bug in action.

The iOS 11 bug shows a text arriving in iMessage that doesn’t appear within a speech-bubble.

The Verge has this gif of how the message was appearing in the ad before Apple re-submitted it:

iPhone crashing bug

iPhones started crashing at midnight on 2 December due to a fault in iOS 11.1.2. Apple was quick to issue iOS 11.2 which fixes that problem, along with adding some new features to the iPhone and iPad operating system.

At midnight on 2 December iPhones started rebooting and crashing due to the bug, which seemed to relate to iOS notifications that happen on an individual’s iPhone (rather than on Apple’s servers).

iOS 11.2 fixed that bug, but some people were finding it hard to update given the fact that their iPhones were in a rebooting loop.

How to fix it...

If your phone is crashing due to this bug, try the following:

  1. Go to Settings > Notifications and scroll down and turn off notifications for any of your apps that have them - this should solve the issue in the short term (so that the phone doesn’t reboot while you are attempting to update iOS). Unfortunately, it has to be done on a per-app basis as you can’t just turn off notifications system-wide.
  2. You should be able to update to iOS 11.2 now - Go to Settings > General > Software Update. (Read more about how to update your iPhone here).
  3. If your iPhone won’t stop rebooting, try plugging it into your Mac or PC and update iOS using iTunes. Find out how to do that here: How to update an iPhone via a Mac.

Autocorrect bug

The latest bug (as of 27 November) in iOS 11 is turning the word 'it' into 'I.T'. The bug is fixed by the iOS 11.2 update that was issued on 2 December - more about that above.

Some users were finding that if they type the word 'it' they will see I.T as a QuickType suggestion, but even if they don't select that option when they press space it will automatically change 'it' into 'I.T'.

Apparently the same happens with 'is', except that word is changed to 'I.S'.

The company had already addressed a similar bug that turned the letter I into a question mark in a box. The company issued a fix for that issue in iOS 11.1.1.

Prior to the iOS 11.1.1 update if you typed the letter I it would autocorrect to an exclamation mark within a box.

How to fix it...

Initially, Apple offered the following fix, although the subsequent iOS 11.1.1 update should fix the issue.

  1. Go to Settings > General > Keyboard
  2. Tap on Text Replacement.
  3. Tap on +
  4. Type I for Phrase.
  5. Type i for Shortcut.
  6. Tap Done.

The same fix should work for the I.T autocorrect bug, just choose 'it' for Phrase, and type 'it' for the shortcut.

Alternatively, you can use a third party keyboard or turn off predictive text.

It is thought that the I issue is linked to an emoji as those people affected have an I character appearing in their frequently used emojis.

iOS 11 Battery issues

One of the new features in iOS 11.3 was access to information about battery capacity and whether Apple had been throttling your iPhone to prevent unexpected shutdowns - read about why Apple was slowing down some iPhones here.

However, even before light was shed on this practice, there have been some concerns about battery life in iOS 11. One issue was with the YouTube app, which has been found to drain significant amounts of battery in iOS 11.

The YouTube app appears to be at fault here, rather than iOS 11, with reports of iPhones running hot when the YouTube app is in use.

YouTube has responded claiming that it is addressing the issue.

Earlier in the iOS 11 release cycle some battery life concerns identified by mobile security firm Wandera.

The company monitored 50,000 iPad and iPhone users on its networks and found that those using iOS 11 were finding that their battery was draining 'twice as fast' as those on iOS 10.

This battery life issue could be related to the way Spotlight reindexed iOS 11 once installed, and also it could be due to users trying out new features and thereby using their device in an unusual way.

If you are experiencing a problem with battery life then the suggestion was that factory resetting your iPhone or iPad could fix it, but this would mean wiping your device. Here's how to factory reset your iPhone or iPad.

Apple's iOS 11.0.1 update was thought to go some way to correcting the battery life issues, by addressing WiFi and Bluetooth settings. However, battery life appears to be the top complaint from those who have installed iOS 11.0.3.

There were also concerns about the battery inside the iPhone 8, with reports of two iPhones breaking after the battery burst the case open. Apple is said to be investigating the claims, which were made about iPhones bought in Taiwan and Japan. We have more information in this article: iPhone 8 battery problems: Latest news & what to do.

You can also save battery life by following our tips here: How to save battery life on iPhone.

iOS 11 Crackling (or 'static') noise

Some users reported hearing an annoying crackling noise from their iPhone's earpiece during phone or FaceTime calls since updating to iOS 11 - but it only seems to affect the new iPhone 8 and 8 Plus handsets. Apple has addressed this with a patch in iOS 11.0.2 (discussed here).

WiFi & Bluetooth issues with iOS 11

Users have been confused to find that when they toggle Bluetooth and Wi-Fi off in iOS 11 Control Centre on their iPhone it doesn't actually turn off the functions.

Apple explains that this is so that the following applications can have access to the functions:

  • AirDrop
  • AirPlay
  • Apple Pencil
  • Apple Watch
  • Continuity features, like Handoff and Instant Hotspot
  • Instant Hotspot
  • Location Services

What it means is that even if you think you have turned off WiFi or Bluetooth you haven't really, and functions like AirDrop will still be available.

If you want to turn off Bluetooth or WiFi you need to go into Settings, but even if you turn them off here they will turn on again automatically at 5am the next morning.

Missing apps or apps not working

Because iOS 11 marks the end of support for 32-bit apps some of the older apps on your iPhone may stop working following the iOS 11 update. We have more information on this here: Which apps won't work in iOS 11?

iOS 11 not working with email in Outlook/Exchange

There was a "cannot send mail. The message was rejected by the server" bug in iOS 11 that was stopping emails being sent via Microsoft servers.

Apple acknowledged this and worked on a fix with Microsoft which was issued with the iOS 11.0.1 update, so if you are experiencing this issue update your device.