7 Things to Know About the iPhone 7 iOS 11.2.1 Update

Apple’s new iPhone 7 iOS 11.2.1 update isn’t a massive update, but it could have a significant impact on your device’s performance.

The company’s latest iOS 11 update is a maintenance upgrade which means it comes with bug fixes for the iPhone 7 and iPhone 7 Plus. Namely, a fix for HomeKit issues.

Apple’s intentions are good, but the update is already causing problems for many iPhone 7 and iPhone 7 Plus owners.

Early adopters are complaining about UI lag, battery drain, and issues with certain first and third-party applications. It’s difficult to predict exactly predict how iOS 11.2.1 will perform on your iPhone 7 or iPhone 7 Plus so you need to be careful.

If you’re coming to iOS 11.2.1 from iOS 11.2, your download should be a few megabytes. It’s a tiny download and it should only take you a few minutes to get it up and running.

If you skipped iOS 11.2, iOS 11.1.2, iOS 11.1.1, or iOS 11.1, your iOS 11.2.1 download will be much bigger and your installation will take longer.

This guide will take you through steps iPhone 7 should take prior to downloading the iOS 11.2.1 update. Our walkthrough will also go over a few other things current, and prospective, iOS 11.2.1 users should know about bugs and performance issues, the iOS 11 jailbreak situation, and new information about the downgrade.

It’ll also provide you with some quick feedback about the iPhone 7 iOS 11.2.1 update’s performance. If you’re currently on the fence about iOS 11.2.1, our initial thoughts could help get you to one side of the fence or the other.

iPhone 7 iOS 11.2.1 Impressions

iPhone 7 iOS 11.2.1 Impressions

Your iOS 11.2.1 download shouldn't take long to complete. It took a few seconds on the iPhone 7 and iPhone 7 Plus. The installation process took longer.

The iOS 11.2.1 installation process took about six minutes on both the iPhone 7 and iPhone 7 Plus. We didn't run into any problems during the installation.

If you need more on the iOS 11.2.1 installation process and download, take a look at our walkthrough. It'll guide you through it all. 

Battery life is solid on the iPhone 7. We haven't noticed any abnormal drain on the iPhone 7 or iPhone 7 Plus. Connectivity (Wi-Fi, Bluetooth, Cellular data) is stable and we haven't noticed any of the FaceTime Audio issues that gave us trouble on iOS 11.1.

We've haven't noticed any major issues with our first and third party applications. We haven't seen any crashes yet. 

The lag we noticed on iOS 11.1 is still MIA and we haven't noticed any freezes, stutters, or reboots. iOS 11.2.1 feels fast and stable.

If you own one of these devices and you're feeling leery about upgrading, take your time. iOS 11.2.1 isn't going anywhere.

If you need additional feedback, take a look at our list of reasons to and not to install iOS 11.2.1 on your iPhone right now


  1. […] also put together some first impressions of the iPhone 7 and iPhone 6s iOS 11 updates. We plan to cover more iOS 11 updates in the near future so keep an […]


  2. […] to, and not to, install the iOS 11 update on your device. We’ve also put together quick iPhone 7, iPhone 6s, and iPhone 6 iOS 11 […]


  3. […] also put together guides to the iPhone 7 (a little more extensive than our impressions here), iPhone 6s iPhone 6, iPhone 5s, iPhone SE, […]


  4. […] also put together quick reviews for the iPhone 7, iPhone 7 Plus, iPhone 6, iPhone 5s, iPhone SE, and the iPad Air 2, iPad Air, and iPad mini […]


  5. […] Apple’s refined its software with bug fixes and patches, but iOS 11.0.3, the company’s most recent upgrade, is causing problems for many iPhone 7 users. […]


  6. Show Box

    11/07/2017 at 2:25 am

    It is my third retry while updating to iOS 11.1 always showing “Unable to Install Update”. Can you help me Adam?


  7. Tutuapp

    11/07/2017 at 2:29 am

    Good to get 3D touch app switcher back in the iOS 11.1. New emoji sets are good. The fluid wallpapers are so sleek I love the designs. And most important Apple Team has fixed KRACK WiFi vulnerability which was most important thing in this update. Overall I am really enjoying iOS 11 so far. Thanks for writing Adam really enjoyed your article.


Leave a Reply

Your email address will not be published. Required fields are marked *