How to Install iOS 11.2.1

The iOS 11.2.1 update is here with key fixes for a Homekit issue and it includes the new iOS 11.2 features and fixes. This update also rolls in the new iOS 11.1 emojis, new iOS 11 features that stack on top of the iOS 11 upgrade that added a ton of new features in September and November. This guide will show you how to install iOS 11.2.1 on your iPhone, iPad or iPod touch.

Apple released iOS 11 on September 19th. The iOS 11.0.1 update arrived on September 26th, followed by iOS 11.0.2 and iOS 11.0.3. On October 31st, Apple released iOS 11.1. Soon after Apple delivered iOS 11.1.1 with two very important fixes and iOS 11.1.2 with two special iPhone X fixes. Since then we’ve also seen iOS 11.2 with Appel Pay and fixes and iOS 11.2.1 with more fixes.

Apple Users can start the iOS 11 or iOS 11.2.1 download directly on their iPhone or iPad without connecting to a computer. If you prefer to install the iOS 11.2.1 update with iTunes we’ll also show you that option.

You can use this tutorial to upgrade to iOS 11.2.1 from iOS 9 or iOS 10. There is no need to upgrade through different versions, updating now will install the latest version. If you are still on iOS 10.3.3 you will go directly to iOS 11.2.1.

Here's how you can upgrade to iOS 11.1.2.
Here’s how you can upgrade to iOS 11.2.1.

Make sure you prepare by following this list of 10 things to do before installing iOS 11 on your iPhone or iPad. This will keep your data safe and help you upgrade faster and easier.

The iOS 11.2.1 update takes about 10 to 20 minutes to complete if you have a fast Internet connection and don’t run into any iOS 11 installation problems. In order to install the iPhone or iPad needs 50% or more battery life and needs a WiFi connection. The iOS 11 installation may take longer to complete if you are coming from iOS 10. If you are just installing the iOS 11.2.1 update and are already on iOS 11, you can expect a fast update.

How to Download iOS 11.2.1 and Install the iOS 11.2.1 Update

In most cases, the iOS 11.2.1 update will download in a 5-10 minutes. The iOS 11.2.1 update is around 70MB on the iPhone X. The length of time will vary based on how fast your Internet connection is. If you cannot get past the initial download, you should restart your phone and try again. If it is still slow you may want to wait or try using iTunes.

You do not need to wait for an alert or a small red bubble on the Settings app to install iOS 11.2.1. Here’s what you need to do on iPhone or iPad when you are on a WiFi network.

How to check for the iOS 11 update.
How to check for the iOS 11 update.

This process will take 5-15 minutes on a fast connection with no errors. You can use the iPhone while the iOS 11.2.1 download completes, but not during the installation.

  1. Tap on General.
  2. Tap on Software Update.
  3. Tap on Learn More to see more about this update.
  4. Or, Tap on Download and Install to start.
  5. Enter your passcode.
  6. Agree to the terms and conditions twice.
  7. Wait for the iOS 11.2.1 download to complete.
  8. When prompted tap Install.

When the update completes, which may take two restarts or two times where you see the Apple logo, you should be able to start using your iPhone again.

You may see a Hello screen, where you swipe to complete the update. If prompted enter your Apple ID password to finish the installation. In some cases, you may simply need to enter your passcode to unlock the phone and start using it. If you forget your Apple ID, you need to reset it at

How to Install iOS 11.2.1 with iTunes

Install the iOS 11 update with iTunes.
Install the iOS 11 update with iTunes.

If you do not want to install the iOS 11.2.1 update over the air by downloading directly to your iPhone or iPad, you can plug it into iTunes and allow it to check for an update there.

Connect the iPhone to the computer with a lightning cable. You may get a pop-up notification when you do this allowing you to download and install iOS 11.2.1, but if you don’t use the directions below.

  1. Click on the iPhone or iPad icon in the upper left.
  2. Click on Check for Update.
  3. Click Download and Update.

  4. Agree to the terms and conditions.
  5. When needed, enter your passcode on the iPhone.

This isn’t typically faster, but if you have trouble downloading the iOS 11.2.1 update this can bypass some errors.

iOS 11 vs iOS 10: What’s New in iOS 11.2 & iOS 11.2.1

What's New in iOS 11.2 & iOS 11.2.1

What's New in iOS 11.2 & iOS 11.2.1

The iOS 11.2.1 update is small and it focuses on fixes for HomeKit that Apple already fixed on the server side. This is an important update to install if you use HomeKit. 

The iOS 11.2 update delivers a major fix for the crashing iPhone, dozens of other fixes and includes Apple Pay Cash. The update is about 480MB for most users and should install pretty quickly if you are already on iOS 11.1.2.

Apple Pay Cash - This new service lets you send, request and receive money from other iPhone users.



  • Adds support for faster wireless charging on iPhone 8, iPhone 8 Plus, and iPhone X with compatible third-party accessories
  • Introduces three new Live wallpapers for iPhone X
  • Improves video camera stabilization
  • Adds support in Podcasts to automatically advance to the next episode from the same show
  • Adds support in HealthKit for downhill snow sports distance as a data type
  • Fixes an issue that could cause Mail to appear to be checking for new messages even when a download is complete
  • Fixes an issue that could cause cleared Mail notifications from Exchange accounts to reappear
  • Improves stability in Calendar
  • Resolves an issue where Settings could open to a blank screen
  • Fixes an issue that could prevent swiping to Today View or Camera from the Lock Screen
  • Addresses an issue that could prevent Music controls from displaying on the Lock Screen
  • Fixes an issue that could cause app icons to be arranged incorrectly on the Home Screen
  • Addresses an issue that could prevent users from deleting recent photos when iCloud storage is exceeded
  • Addresses an issue where Find My iPhone sometimes wouldn’t display a map
  • Fixes an issue in Messages where the keyboard could overlap the most recent message
  • Fixes an issue in Calculator where typing numbers rapidly could lead to incorrect results
  • Addressed an issue where the keyboard could respond slowly
  • Adds support for real-time text (RTT) phone calls for the deaf and hard of hearing
  • Improves VoiceOver stability in Messages, Settings, App Store, and Music
  • Resolves an issue that prevented VoiceOver from announcing incoming Notifications

The iOS 11.1.2 update fixed the following items, which are also rolled into the iOS 11.2 update. 

  • Fixes and issue where the iPhone X screen becomes temporarily unresponsive to touch after a rapid temperature drop. 
  • Addresses an issue that could cause distortion in Live Photos and videos captured with the iPhone X. 

If you are on a much older version the update will be larger and it will include the other fixes listed below. 

The iOS 11.1.1 update is out now for the iPhone and iPad. This update includes all of the changes from iOS 11.1 and two very important fixes. This small update is just over 50MB in size on most iPhones that are on iOS 11.1 already. 

  • Fixes autocorrect problem that replaced "I" with a question mark box and other symbols. 
  • Fixes Hey Siri not responding. 

The iOS 11.1.1 update includes all of the same security fixes as iOS 11.1, and the new features outlined below. After a lot of iOS 11 problems, the iOS 11.1 update is about delivering a lot of fixes that will help you use the iPhone better. This is a free update that is about 200 to 300 MB in size and it is one that most users will want to install on their iPhone. Here's a full list of the changes in iOS 11.1 including many fixes for the Photos app and for Accessibility. 

  • Over 70 new emoji characters including new food types, animals, mythical creatures, clothing options, more expressive smiley faces, gender-neutral characters and more
  • Resolves an issue that could cause some photos to appear blurry
  • Addresses an issue that could cause Live Photo effects to playback slowly
  • Fixes an issue that could cause some photos to not display in the People album when restoring from an iCloud Backup
  • Fixes an issue that could impact performance when swiping between screenshots
  • Improves braille support for Grade 2 input
  • Improves VoiceOver access to multi-page PDFs
  • Improves VoiceOver rotor actions for announcing incoming notifications
  • Improves VoiceOver rotor actions menu when removing an app from the App Switcher
  • Fixes an issue for some users where alternative keys would not display when using VoiceOver with Touch Typing
  • Fixes an issue where VoiceOver rotor would always return to default action in Mail
  • Fixes an issue where VoiceOver rotor would not delete messages
  • Adds back support for accessing the app switcher by pressing on edge of display with 3D Touch
  • Fixes an issue that caused cleared Mail notifications to reappear on Lock screen
  • Fixes an issue in enterprise environments that prevented data from being moved between managed apps
  • Fixes an issue with some 3rd-party GPS accessories that caused inaccuracies in location data
  • Resolves an issue where settings for Heart Rate notifications were appearing in Apple Watch app (1st generation)
  • Fixes an issue where app icons were not appearing in notifications on Apple Watch

Apple also includes a number of important security fixes, including one for a major WiFi flaw in this update. Most users will want to install iOS 11.1 for the security updates as much as for the new emoji. 


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  2. Ali shah

    12/10/2015 at 9:59 pm

    Could you whatsapp me as soon as jb for ios 9.2 release +923222194000


  3. Mon

    12/12/2015 at 4:34 am

    I am downloading iOS 9.2 I started downloading last night till now it’s downloading I tried connected to iTunes its showing me downloading time 5 hours :-( help!!!!!


  4. Oli

    12/13/2015 at 10:00 am

    After updating to 9.2 data & documents toggle is missing from ICLOUD. How do I sync my coolwriter app without this missing option?


  5. Oli

    12/13/2015 at 10:01 am

    Documents and data toggle missing after 9.2 update. HELP!
    Cannot sync coolwriter app.


  6. Steve

    03/24/2016 at 1:30 am

    9.3 slowed my iphone 5s so cant get email or games or take ages to load or say connection lost, want 9.2.1 bak


  7. Bob

    03/27/2016 at 8:21 am

    I get a message that I’m not connected to the internet, even when I’m using my Mac to install it. The Mac says I’m up to date with 9.2 but I keep getting a message on the phone that 9.3 is successfully downloaded – but it will not install?


  8. Jhade

    04/07/2016 at 8:09 pm

    I can;’t install the latest iOS, can you help me fix this. The install button is colorless but it should be color blue right so that I can install it. Help me.


    • Iphone update

      04/10/2016 at 4:38 am

      There isn’t enough space for the update available on the device.
      Clear some data or move it to your email or iCloud to free more space and remove apps. Then it should work fine. Good luck.


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  10. Raj Kumar

    07/23/2016 at 2:13 pm

    This is super helpful for me. Thank you so much for the guide. I was looking for a guide to install iOS on Android since very long back. Is that really possible to do that?. Can we get apple iOS for free to Install on Other devices. Read More, Someone help me on this please.


  11. kalvet

    11/21/2016 at 4:57 am

    iOS 9 is very impressive and nice than this iOS 10 in my opionion..


  12. Pamela Elaine Martin

    09/21/2017 at 7:16 am

    After installing iOS 11.0 I bypassed Apple Id sign in due to forgotten password, message read not all iCloud functions may work properly. How can I go back to amend this?


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