Apple on Monday announced that its Apple Intelligence features are now available in India and other regions, adding support for new languages like localized English for India and Singapore, as well as French, German, Italian, Portuguese (Brazil), Spanish, Japanese, Korean, and Simplified Chinese.
You can update your iPhone to iOS 18.4 by going to the Settings app, choosing General, then choosing Software Update. The update is available to all iPhone models that support iOS 18.4. The new Apple Intelligence features, however, are available on all iPhone 16 models, iPhone 15 Pro, and iPhone 15 Pro Max.
The update is rolling out to iPhone users now. It may take a few hours to hit your device, so be sure to keep checking throughout the day.