This year, apple decided to add another member to their OS family, the iOS 11. This is the eleventh major release of the iOS mobile operating system, being the successor to iOS 10.

It was announced and the first beta version released to developers at the company's Worldwide Developers Conference on June 5, 2017, with a public beta released in late June, and a stable version for consumers was released in most countries on September 19, 2017. Some countries got the update on September 20, 2017.

Now apple made a lot of changes and tweaks on the iOS 11, which would take a long time to fully list, but in this review, we would just be highlighting some of them.

Here are some of the changes on iOS 11:

Lock screen and Notification
Lock screen and Notification Center are combined, allowing all notifications to be displayed directly on the lock screen. Scrolling up and down will either show or hide notifications.

Animoji
This is one of the exciting things to look out for in the iOS 11. Apple combines emoji with animations, and it takes advantage of the iPhone X's 3D face-scanning TrueDepth camera array. The result is Animoji, which tracks the muscles in your face to animate the emoji.

Developer APIs
A new "ARKit" application programming interface (API) lets third-party developers build augmented reality apps, taking advantage of a device's camera, CPU, GPU, and motion sensors. The ARKit functionality is only available to users of devices with Apple A9 and later processors. This is because "these processors deliver breakthrough performance that enables fast scene understanding and lets you build detailed and compelling virtual content on top of real-world scenes." Can’t wait to use this feature.

Control Center
The Control Center redesign unifies its pages and allows users to 3D Touch (or long press on devices without 3D Touch) buttons for more options. Sliders adjust volume and brightness. The Control Center is customizable via the Settings app, and allows more settings to be shown, including cellular service, Low Power Mode, and a shortcut to the Notes app.

Siri
Siri is now smarter! The intelligent personal assistant now has a more natural voice and support language translation, with English, Chinese, French, German, Italian and Spanish available at launch. It will also support follow-up questions by users (this has been one of the major setbacks of Siri). Users will also be able to type to Siri.
Siri will be able to use "on-device learning", a privacy-minded local learning technique to understand a user's behavior and interests inside different apps, to offer better suggestions and recommendations.

Camera
iOS 11 introduces optical image stabilization, flash photography and high dynamic range for portrait photos. Live Photos receives new "Loop", "Bounce" and "Long Exposure" effects, and uses High Efficiency Image File Format to decrease photo sizes. Videos will be encoded in the new High Efficiency Video Coding video compression format, enabling improved quality while also decreasing size by half.
Live Photos, the feature that adds a bit of motion magic to still photos, is even better in iOS 11. For the first time, you can use a slider to select a portion of the Live Photo that looks the best. Since Live Photos are essentially short videos, it's like pulling the best still shot out of a video.
This is a nice change for images where the key photograph might have been blurred, because now you can select a non-blurry section of the

image.
For iPhones that support Portrait Mode, iOS 11 brings some important improvements. Image quality has been improved, low light performance is better, and Portrait Mode images support optical image stabilization. Flash works in Portrait Mode for the first time, and it also supports HDR for even better lighting and filters for adding flare.
When you FaceTime someone in iOS 11 on a device that's capable of taking Live Photos, there's a new button for capturing a Live Photo during the chat.

Settings
A new "Do Not Disturb While Driving" mode has been added and it lets users block unnecessary notifications as long as their iPhone is connected to a vehicle through Bluetooth. An auto-reply feature sends a specific reply to senders of messages to let them know the user is currently unavailable through text.
Read full review here https://naijmobile.com/check-ios-11-review/