Apple has just released iOS 27.3 beta 1 for developers, and many people call this the biggest update of iOS 27 since its launch in September. I have filtered the notable changes from the source, including a detail that Vietnamese users will probably be most interested in: Siri AI begins to support Vietnamese.

Siri AI adds Vietnamese language

In this beta, Siri AI is expanded to four additional languages: Traditional Chinese, Vietnamese, Turkish and Norwegian. Previously, Apple Intelligence was available in Vietnamese, but Siri AI was only available in English at launch, and later added a few languages ​​such as French, Japanese, Korean, Portuguese, and Spanish. So for users in Vietnam, this is the first time being able to talk to the new version of Siri in their native language.

Because this is just beta 1, I don't think we should expect Siri to understand Vietnamese fluently right away, especially regional accents and sentences mixed with English like my brothers often say. Have to wait for the official version to know how much it can be used.

Besides languages, Siri AI also does more inside the app. According to MacRumors, Siri can now unsubscribe from spam in Mail, recall recently sent emails, add cities to the Weather app, clean Safari history, close duplicate tabs, and clean files that haven't been opened in Files for a long time. The list of apps with new actions includes Calendar, Files, Diary, Mail, Maps, Messages, Music, Notes, Photos, Reminders, Safari, Shortcuts and Weather. If you want to know what Siri can do in which application, just ask it directly. Apple also opened the preview for developers, allowing external applications to bring their content and actions to Siri AI.

New Health App is back

The redesigned Health app appeared in several beta versions of iOS 27.2, then was pulled, and now returns in March 27. 9to5Mac reports that Apple has indicated it will release it with iOS 27.3 before the end of the year.

The application has an Insights tab that synthesizes activity rings, heart rate, sleep scores and vital indicators, then uses Apple Intelligence to suggest based on the user's goals. The Longevity tab looks at long-term data in seven groups: cardiovascular, sleep, mental health, mobility, metabolism, hearing and nutrition. Including Health Age, which compares measurements from Apple Watch with your real age.

Safari has vertical tabs and dark mode for every page

Safari has an additional vertical tabbing style, enabled in Safari settings. Add adaptive dark mode, automatically darkening websites that do not have a dark interface. I find this useful for those who read newspapers at night, because many pages in Vietnam still only have white backgrounds.

iPhone Duo gets private care

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Reachability is originally a feature of pulling down the top half of the screen for the thumb to reach on long-screen iPhones. On the iPhone Duo, it's been reworked horizontally: swipe from the left edge to the right edge to pull the content closer to your finger when held in one hand. Turn on in Settings, Accessibility, Touch.

The keyboard on the Duo's external screen has also been tweaked: the emoji key is swapped with the number key, the microphone key is swapped with the return key, the keys are taller and thinner, and the space bar is wider. As for iPhone Duo-style StandBy mode, it is brought to all iPhones running iOS 27, with additional color-customized watch faces, Calendar and Weather faces, and the ability to create multiple copies of the same face and swipe back and forth.

Other small changes worth trying

Apple Fitness+ adds Gym Strength, creating four-week lesson plans based on the user's goals, experience, training schedule and equipment. Apple Music has Selfie Sing, record a video of yourself singing karaoke and share, including voice editing effects.

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The VPN button in Control Center now quickly switches between VPNs instead of just toggling the most recently used one. Live Rewind and Siri Recap for Apple Watch Series 12 and Ultra 4 can also be tested in watchOS 27.3, but require an iPhone running iOS 27.3. In China, Apple Intelligence officially runs with basic features, but no Siri AI yet.

The public beta should be available in the next few days. If you are using the main device, I advise you to wait longer, because beta 1 often has errors. Are you planning to go to beta to try Vietnamese Siri?