iOS 26.4 Beta 4: New Emoji, AI Playlists, and a Curious Retreat on RCS Encryption

Apple released the fourth developer beta of iOS 26.4 on March 9, 2026, continuing the iterative refinement cycle that began with the first beta in mid-February [1]. While the update delivers the crowd-pleasing addition of new emoji characters and polishes several features introduced in earlier betas, it is the removal of a feature — end-to-end encrypted RCS messaging — that has generated the most scrutiny among developers and privacy advocates. The move signals that Apple's cross-platform encryption ambitions remain a work in progress, even as the company deepens its investment in Apple Intelligence across the operating system.

From iOS 18 to iOS 26: How We Got Here

To understand the significance of iOS 26.4, it helps to step back. At WWDC 2025 in June, Apple unveiled iOS 26 alongside the "Liquid Glass" design language — the most sweeping visual overhaul since iOS 7 in 2013 [2]. The jump from iOS 18 to iOS 26 reflected Apple's decision to unify version numbering across all its platforms, with "26" representing the software release season from September 2025 through September 2026 [3].

iOS 26 shipped on September 15, 2025, introducing Liquid Glass, a dramatically redesigned Phone app, expanded Apple Intelligence capabilities, and a new Games hub [2]. Since then, Apple has followed its established cadence: iOS 26.1 landed alongside the iPhone 17 line in the fall, with subsequent point releases adding features and refinements through the winter. iOS 26.4 represents the fourth major point release — and perhaps the final significant feature update before WWDC 2026 shifts attention to iOS 27 [3].

What's New in Beta 4

Nine New Emoji Characters

The headline user-facing addition in beta 4 is the arrival of nine new emoji approved by the Unicode Consortium in July 2025 [4][5]. The roster includes:

• Trombone — filling a gap in the musical instruments category
• Treasure Chest — a fantasy and gaming favorite
• Distorted Face — joining the expressive face family
• Hairy Creature — colloquially referred to as Bigfoot or Sasquatch
• Fight Cloud — the comic-strip staple depicting a scuffle
• Orca — a long-requested marine mammal
• Landslide — representing natural events

Apple also added new skin tone modifiers for people wrestling and dancers with bunny ears, plus a gender-neutral option for the ballet dancer emoji [4]. These additions follow Apple's standard practice of incorporating newly ratified Unicode emoji in a spring-cycle update.

Accessibility Refinement

A small but telling change: the Accessibility setting previously labeled "Reduce Highlighting Effects" has been renamed to "Reduce Bright Effects" [1]. The underlying functionality — minimizing highlighting and flashing animations on buttons, keyboard interactions, and other on-screen elements — remains the same. The rename suggests Apple received feedback that the original label was unclear; "Reduce Bright Effects" more intuitively communicates what the toggle does for users with photosensitivity or visual discomfort.

Bug Fixes and Stability

As is typical for a fourth beta, much of the under-the-hood work targets stability and performance. Developer forums and early testing reports indicate improved responsiveness in animations, reduced battery drain in standby mode, and fixes for intermittent crashes in the Music and Podcasts apps [6][7].

The Bigger Picture: iOS 26.4's Feature Set

Beta 4 is best understood in the context of features introduced across the full iOS 26.4 beta cycle, many of which are now mature enough for the anticipated late-March or early-April public release [8].

Playlist Playground: AI Comes to Apple Music

The marquee feature of iOS 26.4 is Playlist Playground, an Apple Intelligence-powered tool inside Apple Music that generates curated playlists from natural-language text prompts [9][10]. Users can type a mood ("melancholy Sunday morning"), an activity ("high-intensity interval training"), or a cultural reference ("disco songs that defined the 1970s"), and the system produces a 25-song playlist drawn from Apple Music's catalog.

The feature lives behind a new playlist icon on the Library page and carries a "beta" label. Once a playlist is generated, users can manually add, remove, or reorder tracks — and they can refine results with follow-up prompts without starting from scratch [9]. Playlist Playground requires Apple Intelligence models to be downloaded in the background, meaning it is only available on devices that support Apple Intelligence — iPhone 16 and later, and iPhone 15 Pro models [10].

The arrival of AI-driven playlist generation places Apple in direct competition with Spotify's long-standing AI DJ and recommendation features. Music Business Worldwide reported that the feature has attracted attention from record labels monitoring how AI curation could reshape discovery and royalty distribution [11].

Concerts Near You

Alongside Playlist Playground, Apple Music gained a "Concerts Near You" feature that surfaces upcoming live performances from artists in a user's library, leveraging location data to highlight shows in their area [9].

Redesigned Apple Music Interface

Album and playlist views received a visual overhaul, with full-page artwork and a cleaner layout that draws on the Liquid Glass design principles introduced in iOS 26 [9].

Video Podcasts

Apple Podcasts now supports a richer video podcast experience, reflecting the platform's push to compete with YouTube and Spotify in the video podcasting space [12].

Source: GDELT Project

Data as of Mar 10, 2026CSV

Stolen Device Protection Enabled by Default

In a significant security change, iOS 26.4 activates Stolen Device Protection by default for all iPhones [13]. Previously, users had to navigate to Settings and manually enable the feature, which restricts certain sensitive actions — like changing the Apple ID password or turning off Find My — when the device is away from familiar locations. Making it a default means millions of users who were unaware of the feature will now benefit from its protections without any action.

Battery Charge Limit Shortcuts Action

Apple added a "Set Battery Limit Charge" action to the Shortcuts app, giving users programmatic control over the iPhone's battery charging ceiling [14]. Power users can now automate battery health management — for instance, setting a lower charge limit overnight and raising it before a travel day.

Per-Device Hotspot Data Usage

The Personal Hotspot settings section now displays how much data each connected device has consumed, moved from its previous, less discoverable location within the Cellular settings menu [14]. For users who tether frequently, this provides immediate visibility into which devices are drawing the most bandwidth.

The RCS Encryption Rollback

Perhaps the most consequential change in beta 4 is what was taken away. Apple has removed the toggle for end-to-end encrypted RCS messaging, which had been present and testable since beta 1 [1][15].

The backstory: Apple first announced RCS support in iOS 18 in 2024, bringing richer messaging features — read receipts, typing indicators, higher-quality media — to conversations between iPhone and Android users. But unlike iMessage, early RCS implementation lacked end-to-end encryption, leaving cross-platform conversations less private.

In February 2026, Apple began testing E2EE for RCS in the iOS 26.4 beta cycle. Beta 1 offered encryption for iPhone-to-iPhone RCS conversations. Beta 2 expanded the scope to include iPhone-to-Android encrypted RCS — a milestone that drew praise from privacy organizations including Privacy Guides [15][16]. A toggle labeled "End-to-End Encryption (Beta)" appeared in Settings, and testers could exchange encrypted messages with compatible Android devices running Google Messages.

Now, three betas later, that toggle is gone. Apple has confirmed that encrypted RCS will not ship in the final iOS 26.4 release and will instead arrive in "a future software update for iOS, iPadOS, macOS, and watchOS" [1][17]. No specific timeline has been provided.

The removal raises questions. Encrypted RCS depends on the GSMA's Universal Profile specification, and implementing it requires coordination with Google, device manufacturers, and wireless carriers. It is possible that interoperability issues discovered during the beta period prompted Apple to delay, or that the feature needs more refinement before it meets Apple's standards for a general release. Whatever the reason, the three-beta testing window followed by removal suggests that the engineering challenge of making E2EE work reliably across the fragmented RCS ecosystem proved more complex than anticipated.

For the broader messaging landscape, the delay matters. The EU's Digital Markets Act and growing regulatory pressure have pushed Apple toward interoperability. Encrypted RCS would represent a meaningful step toward parity between iMessage and cross-platform conversations. Its absence from iOS 26.4 means that gap persists for at least another release cycle.

Apple Intelligence: Expanding but Incomplete

iOS 26.4 fits within a broader pattern of Apple methodically expanding Apple Intelligence since its debut at WWDC 2025. The Foundation Models framework received an update in the iOS 26.4 beta cycle that improves instruction-following and tool-calling behavior — critical infrastructure for third-party apps integrating Apple's on-device AI models [14].

Yet notable gaps remain. MacRumors observed that iOS 26.4 launched without new Siri features powered by Apple Intelligence, despite persistent rumors that a more capable, context-aware "Siri 2.0" is in development [18]. The Settings app now references "personalized intelligence" within the Apple Intelligence beta section, hinting at deeper system-level personalization features that have not yet materialized in user-facing form [14].

The cautious rollout strategy reflects a deliberate choice. Apple has consistently shipped AI features incrementally — Playlist Playground in one update, enhanced Siri in a future one — rather than bundling them into a single blockbuster release. This approach reduces the risk of high-profile AI failures but also means that the full promise of Apple Intelligence remains partially unfulfilled nearly a year after its announcement.

Market Context

Apple enters this update cycle from a position of strength. The company topped the global smartphone market in 2025 with a 20% share and 247.8 million units shipped — the highest among the top five brands, with 10% year-over-year growth [19]. In the United States, Apple commands a 57.3% smartphone market share [19]. Globally, there are over 1.56 billion active iPhone users, all of whom will eventually receive the features currently in beta testing.

However, the 2026 outlook is more cautious. Counterpoint Research has noted that the broader smartphone market is expected to soften amid component shortages driven by chipmakers prioritizing AI data center hardware over mobile silicon [19]. Apple's supply chain resilience and premium positioning are expected to insulate it from the worst effects, but the pressure to deliver compelling software features — features that justify upgrades and retain users — has never been higher.

What Comes Next

The fourth beta typically signals that a release is approaching its final form. Based on Apple's historical patterns, iOS 26.4 is expected to reach general availability around late March, with some analysts targeting March 30 [8]. A release candidate could arrive as early as next week.

When it does ship, users will get Playlist Playground, redesigned Apple Music views, Stolen Device Protection by default, nine new emoji, and a collection of quality-of-life improvements. They will not get encrypted RCS messaging — a feature that made it further through testing than any previous cross-platform privacy enhancement before being pulled back.

The iOS 26.5 beta cycle is expected to begin within days of the iOS 26.4 public release [8], and attention will quickly shift to WWDC 2026 and iOS 27 — an update rumored to be tailored for Apple's anticipated foldable iPhone [3]. For now, iOS 26.4 beta 4 represents a snapshot of Apple's priorities in early 2026: polish the AI story, strengthen security defaults, delight users with emoji, and — when it comes to the harder problems of cross-platform encryption — take more time to get it right.