iOS 18.1: How to enable Apple Intelligence on eligible iPhones in India

With the iOS 18.1 update, Apple has released the first batch of Apple Intelligence features for eligible iPhone models. These features include system-wide writing tools, a redesigned Siri assistant with improved natural and conversational capabilities, and an enhanced Photos app, among others. While these features are available in English (US), with support for English (India) planned for next year, there is an option to experience the new features without resetting the phone. Here is a guide: