The update a billion iPhone users have been waiting for is finally here. iOS 27 has started rolling out in India, and for once the headline feature is not a camera tweak or a lock-screen font — it is Siri, rebuilt from scratch into something that can genuinely compete with ChatGPT and Google's assistant. Apple says it "tore Siri to the ground" and rebuilt it from the ground up. After two months of public beta testing, the verdict from people who used it daily: this time they meant it.
Here is everything worth knowing — the features, which iPhones in India actually get them, and whether you should hit that update button today.
Siri AI: the feature everything else orbits around
Let us be honest about Siri's reputation until now. It set timers and misheard names. iOS 27 changes that completely. Siri AI is now a conversational assistant with its own dedicated app — closer to ChatGPT than to the old Siri, but wired into your actual phone:
- It can see what is on your screen and answer questions about it — open a confusing electricity bill PDF and ask Siri to explain the charges
- It answers open questions with informed, current answers, not dead-end links
- It performs actions across apps — moving information between Messages, Mail, Calendar and Notes instead of just opening them
- Your full conversation history lives in a standalone Siri app, so you can pick up where you left off
The important catch for Indian buyers: Siri AI needs an iPhone 15 Pro or newer. If you are holding an iPhone 13, iOS 27 still installs and runs well — but the flagship AI features stay locked. Apple keeps its best tricks for its newest silicon, same as every year.
Search, rebuilt everywhere
The quiet feature most people will use a hundred times a day: Spotlight search has been rebuilt with a comprehensive, always-current index of your content. The same search engine now powers Photos and Mail, which means:
- Photos search that actually finds "that passport photo from March" — even when the photo is years old
- Mail search that surfaces the right email instead of a wall of sort-of matches
- Spotlight results that blend apps, messages, files and actions in one list
This is the feature category that never makes keynote highlights but quietly changes how a phone feels daily. Reviewers who lived in the beta for two months say Mail search alone was their most-wished-for upgrade, and it landed.
AI proofreading — the small feature that matters at work
Your spellcheck is now powered by Apple Intelligence, and a new grammar checker sits beside it. Misspellings still get the red underline; AI-suggested word replacements and grammar fixes show up in blue, framed as suggestions rather than warnings. For everyone who types client emails, WhatsApp Business replies and quotations on their phone — this is a small feature with an outsized effect on how professional your messages read.
The features under the radar
Beyond the headline AI story, iOS 27 ships a long list of genuinely useful updates:
- Speed. App launches up to 30% faster; Photos library loads up to 7x faster. On an older iPhone 11 or 12, this upgrade alone will feel like new hardware.
- GymKit on iPhone. Connect to compatible treadmills, bikes and ellipticals for real-time workout metrics — with AirPods Pro 3 tracking heart rate.
- 4K HomeKit cameras. Supported security cameras can now stream and record in 4K, with Apple Intelligence summarising clips before you watch them and searching footage by what happened.
- Accessibility wins. Auto-generated synced captions for any video — with translation into other languages — plus richer VoiceOver image descriptions. For a country with millions of hearing-impaired users, this is quietly the most important feature in the release.
- Health. Cycle Tracking now offers perimenopause notifications and symptom tracking — a first for Apple in India's women's-health context.
- AirPods Custom EQ — adjust lows, mids and highs to your own ears.
- Better iCloud Shared Albums — friends and family on Android or Windows can finally contribute photos easily via iCloud.com. For the typical Indian family group spread across iPhone and Android, this ends a decade of friction.
Should you update today?
Back up first — iCloud Backup in Settings, then Settings > General > Software Update. After that:
- iPhone 15 Pro or newer: update today. Siri AI alone justifies it, and the speed gains are free.
- iPhone 11 to 14: update within a week or two, after the first bug-fix release. You get the search overhaul, proofreading, speed gains and everything else — just not the AI features.
- iPhone X or older: you are out of the upgrade path. The iPhone 18 Pro and the new foldable iPhone Duo exist precisely for you, if and when you are ready.
One India-specific note: update on Wi-Fi with at least 50% battery and some patience — release-night servers are always slow. The update is worth it; the queue is not urgent.
*More from the blog: if you are upgrading phones this week anyway, read iPhone 18 Pro Max price in India for the offers worth knowing, and will GPT-6 Astra affect jobs for the other big tech story this month.*