We tested the iOS 26.4 Siri and Apple Intelligence update: on-screen awareness, app actions, privacy behavior, Writing Tools, Gemini handoff, and what still needs work.
iOS 26.4: The AI Revolution arrives on iPhone
Apple is set to release iOS 26.4 in April 2026, marking the most significant update to the iPhone's "brain" in years. This update fully integrates Apple Intelligence across the OS and introduces a completely reimagined Siri.
The New Siri: Smarter and More Natural
Siri has received a ground-up redesign. In iOS 26.4, Siri can now understand complex, multi-part requests and maintain context over a conversation. You no longer need to say "Hey Siri" for every follow-up question. Plus, with on-screen understanding, Siri can help you with what you're currently looking at—like identifying a restaurant on a map or summarizing an article.
Google Gemini Integration
In a surprising move, Apple has partnered with Google to bring Gemini integration to specialized tasks. While your personal data is still processed on-device for maximum privacy, Siri can now "hand off" complex knowledge queries or generative image tasks to Gemini if you opt-in.
Writing Tools and Photo Cleanup
- Writing Tools: Proofread, rewrite, and summarize text in Mail, Messages, and third-party apps with a single tap.
- Photo Cleanup: Effortlessly remove photobombers and distracting objects from your photos using the new Generative Inpainting tool.
- Notification Prioritization: AI now sorts through your notifications to surface the most urgent messages while silencing the noise.
Privacy First
True to Apple's roots, privacy remains the priority. Most processing happens locally on your device's Neural Engine. For tasks that require cloud power, Apple uses "Private Cloud Compute" to ensure your data is never stored or shared with anyone, not even Apple.
When Can You Get It?
The developer and public betas begin in February 2026, with the full public release expected in early April. If you're on an iPhone 12 or later, you're ready for the AI revolution!
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What actually feels new
The biggest change is that Siri behaves less like a command line and more like a context-aware assistant. Follow-up questions are easier, app actions require less exact phrasing, and on-screen awareness reduces the need to copy and paste information between apps. It is not perfect, but it is a meaningful shift from the old Siri experience.
Best features after testing
- On-screen awareness: Most useful when looking at messages, calendar details, maps, articles, or screenshots.
- Writing Tools: Strong for summarizing long emails and rewriting short messages, weaker for highly technical drafts.
- Notification summaries: Helpful for busy group chats, but still needs manual checking for nuance.
- App actions: Better for simple multi-step tasks, especially when Apple apps are involved.
Privacy behavior
Apple still separates local processing, Private Cloud Compute, and optional model handoff. The practical advice is simple: keep sensitive personal tasks inside Apple Intelligence when possible, and read the prompt when a request is being sent to an external model. The opt-in handoff is useful, but it should not be treated like the same privacy boundary as on-device processing.
Where Gemini helps
Gemini-style handoff is most useful for broad knowledge questions, brainstorming, and generative tasks that need a larger model. It is less important for personal device actions, where Apple Intelligence has the advantage because it can understand app context and local data more naturally.
What still needs work
Siri still struggles when a request depends on ambiguous wording, third-party app support, or multiple conditions at once. The improvement is obvious, but users should expect an assistant that is better and more useful, not a flawless replacement for careful manual work.
Verdict
iOS 26.4 is the most important Siri update in years. It is worth installing for supported iPhones, especially if you use Mail, Messages, Notes, Safari, Calendar, and Photos every day. The real win is not one flashy feature; it is fewer small moments where Siri gives up too early.
