Get your apps ready for the next level.

iPhone XS, iPhone XS Max, and iPhone XR feature a trio of edge-to-edge displays paired with A12 Bionic and the next-generation Neural Engine. A12 Bionic is the smartest and most powerful chip ever in a smartphone, and is designed for performance in mind with Core ML, ARKit, Metal, and more. And now Face ID works even faster than before to securely and privately unlock, authenticate, and pay.

Edge-to-Edge Displays

The Super Retina displays on iPhone XS and iPhone XS Max support High Dynamic Range (HDR) with a 1,000,000 to 1 contrast ratio, wide color support, and the best color accuracy in the industry. iPhone XR introduces the Liquid Retina display — the most advanced LCD in a smartphone with industry-leading color accuracy. These edge-to-edge displays precisely follow the curves of the design, clear to the elegantly rounded corners, so your apps look incredible. And with wider stereo playback, your apps will now have immersive sound to match.

Optimize your UI.

If you’ve already updated your app for iPhone X, simply build your app with the iOS 12 SDK and test in Simulator, included with Xcode 10, to make sure it looks great on iPhone XS, iPhone XS Max, and iPhone XR. To update your app for these new devices, follow the steps below.

Run and Test in Simulator. Make sure your apps take advantage of the edge-to-edge display by respecting safe areas, supporting adaptive layouts, and more. Read the updated Human Interface Guidelines, download the latest version of Xcode 10, and test your app in Simulator.

Enable full screen native resolution. Your app will run in Full Screen Display Mode on iPhone X, iPhone XS, iPhone XS Max, and iPhone XR if your project’s base SDK is set to iOS 11 or later and you have a Launch Storyboard or iPhone X launch image.

Verify all parts of your app. Make sure that your UI displays correctly and no elements are mispositioned, overlapping, incorrectly scaled, or clipped, especially in landscape mode. If you discover issues, use the safe area guides and layout margins to correctly position UI elements.

If only parts of your app run in Simulator — for example, if it mostly uses UIKit, but has camera integration — you should test as much of your UI as possible by commenting out views that Simulator doesn’t support.

Building Apps for iPhone XS, iPhone XS Max, and iPhone XR

Xcode 10.1

Download the latest version of Xcode from the Mac App Store, which includes the latest SDKs for iOS 12 and the iPhone X simulator.

A12 Bionic

This year’s chip is faster, more efficient, and equipped with the next-generation Neural Engine. The Apple-designed GPU has a fourth core added, along with architectural features like tessellation and multi-layer rendering. The combination of the extra GPU core, architectural enhancements and memory compression enable the GPU to perform up to 50% faster. And the 8-core Neural Engine is dedicated to highly efficient, powerful machine learning, enabling all-new experiences.

Machine Learning

Experience seamless integration of Core ML 2 and Metal 2 on the new A12 Bionic. Amazingly fast on-device machine learning enables more intelligent, high-performance apps, all while keeping user data private. Apps automatically take advantage of the processing power of the next-generation Neural Engine on A12 Bionic with smart compute selection. Utilize new API features including image blocks, tile shading and threadgroup sharing, along with optimizations like batch predictions, quantization, and flexible image sizes.

Learn more about Core ML 2

Augmented Reality

The next-generation Neural Engine enables ARKit to detect planes faster and in more challenging environments, while making tracking more robust and power efficient. ARKit 2 also enables powerful new features like shared experiences for multiplayer capable apps and 3D object detection to trigger AR experiences from real world objects. Using the TrueDepth camera, your app can detect the position, topology and expression of the user’s face, all with high accuracy and in real time. This makes it easy to apply live selfie effects or use facial expressions to drive a 3D character.

Learn more about ARKit 2

Submit your apps to the App Store.

iOS 12, iPhone XS, iPhone XS Max, and iPhone XR are now in the hands of customers around the world. Update your apps and product pages, and submit today.

Learn more