Selling Your iPhone Safely: How to Prepare Your Device the Right Way
How to properly prepare your iPhone before selling it – including Activation Lock, Apple Account sign-out and a complete reset.
iOS is Apple's operating system for the iPhone and one of the most widely used mobile operating systems in the world. Unveiled in June 2007 alongside the original iPhone and renamed from iPhone OS to iOS in 2010, the system is introduced every year at WWDC in June and ships in fall with the new iPhones. Since 2025, Apple synchronizes the version numbers of all its operating systems with the calendar year. iOS brings central features such as Home and Lock Screen customization, Dynamic Island, StandBy, Live Activities, Apple Intelligence, the Liquid Glass design, privacy features like Mail Privacy Protection and App Tracking Transparency, FaceTime, iMessage, Wallet, Apple Pay, and deep integration with iCloud, Apple Watch, AirPods, Mac, iPad, Apple TV and Vision Pro.
Apfelpatient.de has gathered the ongoing developments around iOS under this tag: beta cycles for every new version, detailed coverage of all major features and point updates, tips and tricks for settings, privacy and hidden features, background on security updates and critical bug fixes, comparisons with Android, design analyses of new interfaces, regulatory topics such as the DMA in Europe, and all rumors and reports about upcoming iOS versions.
Anyone wanting to understand iOS in depth, use it more effectively or follow the platform strategy behind Apple's mobile OS has their fixed anchor right here.
How to properly prepare your iPhone before selling it – including Activation Lock, Apple Account sign-out and a complete reset.
Apple is already developing iOS 28, iPadOS 28 and macOS 28 – internally, the 2027 systems are codenamed "Boppy".
Here's how to check on your iPhone whether your passwords have been compromised in a data breach – including the correct response and protection tips.
Distillation, Google Cloud and Nvidia chips: A report reveals how Apple plans to technically implement the AI behind the new Siri.
Initial renderings show Siri in iOS 27: in the Dynamic Island, as a chatbot app and with a door for external AI agents.
Pop-ups, battery drain, unknown apps: What really indicates an iPhone hack, what is just phishing, and what steps are sensible now.
As part of its acquisition of Globalstar, Amazon is also acquiring Apple's 20 percent stake. This is revealed in a new FCC filing regarding the transaction.
Apple is working on an iPhone feature that automatically locks the device the moment it is snatched out of someone's hand.
Apple has expanded the security documentation for several versions – including iOS 26, macOS Sonoma, watchOS 26 and visionOS 26.
iOS 26.6 Beta 1 is here. A new warning message appears as soon as the maximum number of blocked contacts on the iPhone is reached.

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