IOS 26

Key takeaways

IOS 26 belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect IOS 26 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of IOS 26 from memory before moving on to harder problems.

Reference excerpt

iOS 26 is the nineteenth major release of Apple's iOS operating system for the iPhone. It was announced at the 2025 Worldwide Developers Conference (WWDC) on June 9, 2025, and released on September 15, 2025. The successor to iOS 18, its version number was brought forward to 26 as Apple adopted a year-based convention for consistency across its operating systems. iOS 26 introduces the Liquid Glass design language that is shared across all other Apple platforms, marking the first major redesign of the user interface since iOS 7. The Wallet app introduces an enhanced boarding pass with the ability to track and share flight status using Live Activities. New Apple Intelligence features include additional ChatGPT integration in Visual Intelligence, now usable when taking screenshots, and the ability for third-party apps to integrate the Apple Intelligence framework. This release was widely received with mixed-to-negative critical and user reception, with reviewers and users criticizing its controversial Liquid Glass interface, performance issues, slow adoption rates, and widespread complaints about battery life and usability.

Features

System features

User interface iOS 26 introduces a unified design language, known as Liquid Glass, across all Apple platforms. Influenced by visionOS, the design replaces the flat design language introduced in iOS 7 to utilize rounded, translucent elements with the "optical qualities of glass" (including refraction), which react to motion, content, and inputs. Multiple apps, including Camera and Safari, have redesigned user interfaces to reflect the new design language.

Home screen and lock screen Widgets on the lock screen can now be placed at the bottom of the screen. The height of the time shown on the lock screen is dynamic, and can increase or decrease depending on the objects recognized in the background. In addition to the Dark, Light, and Tinted themes, iOS 26 adds a "Clear" theme that changes the Home Screen to use icons that use the glass-like effects introduced with Liquid Glass.

Battery A new energy-saving feature called Adaptive Power was introduced for periods of higher device usage. It makes minor adjustments, such as reducing screen brightness and slowing down processes, without blocking background activities like the traditional low-power mode does. Models earlier than the iPhone 15 Pro do not support it, as it requires Apple Intelligence. The estimated time to full charge is now displayed on the Lock Screen and in Settings. In the Settings app, daily battery consumption is color-coded: orange for higher usage and blue for lower or typical usage. Each app shows whether it sent more notifications, ran in the background longer, or consumed more battery than usual.

Accessibility Reader Mode is a system-level reading mode designed to assist users with blindness, low vision, or other reading impairments. Braille Access turns the user's phone into a full braille note-taking tool, eliminating the need for external devices. It supports braille input (via screen or braille display), Nemeth code for calculations, reading braille files, and app navigation. It also provides real-time conversation transcripts on the braille display. Head Tracking allows the user to control the pointer on the screen by tracking head movements and perform to customized actions based on facial movements and expressions (e.g. raise eyebrows, open mouth, smile, stick out tongue, eye blink, etc.) A new audio equalizer with two modes, "Comfort" and "Focus", for automatic frequency adjustment has been added in the Accessibility settings under Audio and Visual Effects.

Apple Intelligence

iOS 26 introduces new Apple Intelligence features; Apple Intelligence models were made more efficient and support additional languages. It supports live translation of voice and text conversations using on-device models, and Genmoji can now be invoked to merge existing emojis together rather than needing to use a prompt. Visual Intelligence and Image Playground also feature additional ChatGPT integration. The framework allows Apple Intelligence features to be integrated into third-party apps; Apple said that a Swift app can implement the framework with as little as three lines of code. After taking a screenshot, a full-screen preview appears. Users can search for information on the circled area and ask questions using ChatGPT. This functions like Visual Intelligence.

Wallpaper In iOS 26 beta 3, Apple introduced new styles for the default iOS 26 wallpaper, including Shadow, Sky, Halo, and Dusk. A new dynamic wallpaper was added in the first public beta. Wallpaper Blur for AOD is a setting that lets the user apply a blur effect to the Always-on display's wallpaper image.

Wi-Fi Wi-Fi Aware: introduced support for the new Wi-Fi standard that allows a device to discover other nearby devices and communicate with them securely without an internet connection or access point. Captive Assist: when the user accesses a public Wi-Fi network on an Apple device by filling out a web form, the form information is automatically shared with the other Apple devices, making it easier to connect to the same network.

Screenshots and screen recordings The "General" section of the Settings app has a new section for configuring screenshots.

Full-screen previews: a screenshot-capture mode that keeps the captured screen in full-screen view instead of minimizing it to an icon in the screen's bottom-left corner. HDR captures: it is now possible to capture HDR screenshots and screen recordings.

eSIM transfer iOS 26 allows the user to directly transfer an eSIM between an iPhone and an Android phone without a QR code from the mobile carrier.

Ringtones New ringtones have been introduced for the first time since iOS 17, including six variations of the "Reflection" ringtone: "Buoyant", "Dreamer", "Pond, "Pop", "Reflected", and "Surge".

App features

Phone An optional unified layout has been introduced, for those who want to have favorite contacts, recent calls, and voicemail in a single view.

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with IOS 26

Start with the simplest possible case. Write down what IOS 26 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to IOS 26 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about IOS 26 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of IOS 26

In research: IOS 26 appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses IOS 26 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: IOS 26 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2025 software, Applications of artificial intelligence, IOS, so understanding it makes those chapters shorter.
In everyday life: Look for IOS 26 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study IOS 26 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what IOS 26 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain IOS 26 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is IOS 26 in simple terms?

iOS 26 is the nineteenth major release of Apple's iOS operating system for the iPhone. It was announced at the 2025 Worldwide Developers Conference (WWDC) on June 9, 2025, and released on September 15, 2025.

Why does IOS 26 matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study IOS 26?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on IOS 26.