iOS 17
i
Developer	Apple
Announced	June 5, 2023 (WWDC)
Initial release	September 18, 2023
Final release	17.7.x security series (2024–25)
Launch devices	iPhone 15 generation
Preceded by	iOS 16
Succeeded by	iOS 18

iOS 17 is the seventeenth major release of iOS, released on September 18, 2023, with the iPhone 15 generation. A people-and-communication year: Contact Posters gave every caller a full-screen identity card, Live Voicemail transcribed messages in real time as they were left (with mid-message pickup), NameDrop exchanged contacts by touching phones together, and FaceTime learned to leave video messages.

Its most novel surface was StandBy — turn a charging iPhone on its side and it becomes a bedside/desk display of clocks, widgets, and photos — the feature that quietly turned MagSafe stands into smart displays, and widgets everywhere became interactive.

Contact Posters; Live Voicemail; NameDrop and improved AirDrop (with internet handoff); StandBy; interactive widgets; the Journal app (17.2); Check In safety monitoring in Messages; offline Maps; grocery-sorting Reminders; Personal Voice accessibility (recreating a user's voice against speech loss); mental-state logging in Health; and a "Danger! Do not use autocorrect against me" keyboard rebuild with transformer-model prediction (and the era's most-quoted patch note: autocorrect finally learning a certain expletive). AirTag sharing, collaborative playlists (17.3), and EU alternative app marketplaces (17.4, under the Digital Markets Act) landed in point releases.

iPhone 15 and iPhone 14 generations back through iPhone XR/XS and the second/third iPhone SE — dropping iPhone 8 and iPhone X. The A12 floor this set held for three consecutive releases.

StandBy and interactive widgets extended the widget platform into ambient computing; Check In, Personal Voice, and Live Voicemail continued the safety-and-accessibility thread as headline features rather than settings-page footnotes; and 17.4's DMA compliance — alternative app stores and browser engines in the EU — marked the first structural crack in the App Store's fifteen-year exclusivity, a regulatory legacy that outweighs the release's features.