11 September 2026

9 new posts across 6 mobile platform sources — 7 worth your time.

One week of Mobile, 7 stories, as published.

App Store submissions now open for the latest OS releases

Apple has opened App Store submissions for iOS 27 and its sister operating systems, allowing developers to submit apps built with the Xcode 27 Release Candidate. This release enables integration with Apple Intelligence, the Foundation Models framework, and updated App Store features.

Why it matters — The transition to the Xcode 27 Release Candidate is the critical milestone for developers to lock in day-one compatibility and leverage new system-level frameworks like Apple Intelligence.

Apple Developer · 11 September 2026 · Read the original →

Android & Kotlin

Kotlin 2.4.20 Released

Kotlin 2.4.20 has been released, featuring coroutine stack trace recovery in the standard library and new collection utility functions. On the Kotlin/Native side, the update improves incremental compilation, enhances Swift export, and automates Package.swift generation for SwiftPM.

Why it matters — Coroutine stack trace recovery solves a major debugging pain point in asynchronous Kotlin code, while automatic Package.swift generation streamlines Kotlin Multiplatform integration into native iOS build pipelines.

Kotlin · 11 September 2026 · Read the original →

Tooling

Introducing Fast and Reliable Wireless Debugging with Android Debug Bridge (ADB) Wi-Fi 2.0

Android Studio has launched ADB Wi-Fi 2.0, which replaces the legacy wireless debugging architecture with a new server stack and smarter network handling. The update is designed to eliminate common setup friction and connection drops reported by developers.

Why it matters — A redesigned server stack and smarter network handling address the inherent instability of local Wi-Fi connections, making wireless debugging a viable default over physical USB cables.

Android Developers · 11 September 2026 · Read the original →

Android & Kotlin

Android Weekly Issue #743

This issue features a guide explaining how Android's Restore Credentials API utilizes WebAuthn resident credentials. The API allows apps to securely restore user sessions during device setup or app reinstallation without manual login steps.

Why it matters — Leveraging WebAuthn resident keys via the Restore Credentials API provides a secure, passwordless way to maintain user authentication state across device migrations.

Android Weekly · 11 September 2026 · Read the original →

Tooling

Leverage Android skills and Gemma 4 in Android Studio Quail 4

Android Studio Quail 4 is now stable, bringing integrated AI capabilities powered by the Gemma 4 model. The update consolidates developer productivity features and AI-assisted coding tools from the last four release cycles.

Why it matters — The stable release of Quail 4 establishes Gemma 4 as a built-in, context-aware assistant directly inside the Android development environment.

Android Developers · 11 September 2026 · Read the original →

iOS & Swift

Apple Opens Submissions for iOS 27, Deprecates Intel Macs

Apple has opened App Store submissions for apps built with Xcode 27 Release Candidate for iOS 27, iPadOS 27, macOS 27, tvOS 27, visionOS 27, and watchOS 27. macOS 27 will exclusively support Apple silicon, ending support for Intel Macs and Rosetta. Starting April 2027, new apps and updates must be built with the iOS 27 & iPadOS 27 SDK or later, and new age rating questions for social media capabilities are now mandatory for submissions.

Why it matters — Developers must update to Xcode 27, target arm64 only for macOS 27, and prepare for mandatory iOS 27 SDK adoption by April 2027; apps with social media features require new age rating answers this month.

developer.apple.com · 11 September 2026 · Read the original →

Android & Kotlin

ADB Wi-Fi 2.0 Boosts Wireless Debugging

Google has released ADB Wi-Fi 2.0, significantly improving wireless debugging for Android devices with up to 66% faster connection speeds and a 32% increase in automatic connection success rates. This update reworks the adb server, adbd daemon, and Android Studio, requiring Android 17 and Android SDK Platform-Tools 37.0.0.

Why it matters — Engineers must update devices to Android 17 and SDK Platform-Tools 37.0.0 to utilize the more reliable and faster wireless debugging capabilities.

developer.android.com · 11 September 2026 · Read the original →

Maybe this is the update where wireless debugging stays connected for a whole hour.

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