Apple has rolled out iOS 18.6 RC (Release Candidate) to developers and public beta testers, signaling the final testing phase before its public debut.
This update, released on July 21, 2025, focuses on refining iOS 18 with critical bug fixes and compliance with EU regulations.
Here's a detailed look at what's new, how it performs, and what users can expect.
Release Information
iOS 18.6 RC, build number 22G84, dropped on July 21, 2025, just a week after beta 3, indicating Apple's push to stabilize the software.
Available for devices from iPhone XR to iPhone 16 Pro Max, this 7.65GB update is expected to hit public release by July 28, 2025, barring any last-minute issues.
Notably, users on iOS 26 beta 3 won't see this update and would need to downgrade using a computer.
Alongside iOS, Apple released iPadOS 18.6 RC, macOS 15.6 RC, tvOS, HomePod OS 18.6 RC, VisionOS 2.6 RC, WatchOS 11.6 RC, and iPadOS 17.7.9 RC.
*Note: Apple seems to have incorrectly labeled "iOS 18.6 RC" as "iOS 18.6 Beta 4."
Key Updates
EU App Store Compliance
In response to the EU's Digital Markets Act, iOS 18.6 RC introduces support for third-party app marketplaces and direct web downloads.
This update refines the user experience with new splash screens during setup, making it easier to install alternative app stores.
While some critics argue Apple's implementation remains complex, this change marks a significant step toward regulatory compliance in the EU.
👉 Apple App Store EU Policy Updates (June 2025)
Modem Firmware Update
For users upgrading from iOS 18.5, iOS 18.6 RC includes a modem firmware update, promising potential improvements in connectivity.
However, no noticeable changes were reported from beta 3 to RC, suggesting the update focuses on stability rather than major performance leaps.
Users report consistent Wi-Fi and Bluetooth connectivity, with cellular performance also holding steady.
Enhanced App Splash Screens
Several apps, including Journal, Reminders, Fitness, and Voice Memos, now feature updated splash screens upon first launch after the update.
These screens highlight minor app updates or reintroduce existing features, providing a refreshed user experience.
While not groundbreaking, these tweaks contribute to a polished feel across the system.
Battery Performance
Battery life in iOS 18.6 RC continues to impress, building on beta 3's strong performance. User reports, including one from an iPhone 16 Pro Max with 100% battery health, show 3 hours and 34 minutes of screen-on time and 41 minutes of idle time, dropping only to 71%.
Community feedback indicates up to 11-12 hours of screen-on time, with no users reporting poor battery life in recent polls.
However, some devices felt warmer during installation, reaching over 100°F in certain areas, though this subsided post-setup.
Bug Fixes
iOS 18.6 RC addresses several lingering issues from iOS 18.5, which was notoriously unstable. Key fixes include:
- Smoother Animations: Micro-stutters in third-party apps and system animations are eliminated, with ProMotion delivering a fluid experience.
- Notification Improvements: Notifications now scroll smoothly without delays or stutters.
- Wallpaper Dimming Bug: The dimming issue is less noticeable compared to beta 3, though not fully resolved for all users.
A known issue persists with HealthKit, where health data becomes inaccessible on devices without a passcode when reaching the slide-to-power-off screen. Apple suggests adding a passcode or rebooting as a workaround.
Editors' Comments
iOS 18.6 RC is a clear step toward stability, addressing the mess left by iOS 18.5 while introducing EU-mandated app distribution changes.
The modem update and refined app splash screens add subtle polish, but the real win is the smooth performance and excellent battery life.
While the lack of detailed release notes is frustrating, this update feels like a reliable bridge to the upcoming iOS 26.
For users hesitant to jump to iOS 26 betas, iOS 18.6 RC is a safe bet, especially if you're facing issues on 18.5.
We recommend installing it on a secondary device to test stability before updating your primary iPhone.
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