The snippets and smart reply options aren't the flashiest features in Apple Intelligence, but these are features Apple introduced in iOS 18.1 that will likely be useful for most people's day-to-day device use.
Summaries
Summary is available throughout the operating system and can be used in different ways in apps, notifications, emails and more.
Mail and messages
In your email inbox in the Mail app, you'll see an AI summary of the main content of your email so you can tell whether it's important at a glance. You won't get a lot of information, but it's enough to provide context when the title doesn't reveal the content of the email. When you click on an email, you can use the "Summary" option at the top to get an overview.
You'll see a summary of incoming messages on your lock screen so you can decide if you need a reply. It's especially useful for long messages, as it's good at extracting the most important parts. You can also view a summary of your unread messages directly in the Messages app.
For almost any notification, Apple Intelligence can group them and give you a short one-sentence summary of what's inside. Click to expand the stack so you can view everything individually. Notification summaries occur automatically when you open Apple Intelligence, but if you want to turn them off, you can do so by opening the Settings app, going to Notifications, and then turning off Summary Preview. You can disable the feature entirely or on a per-app basis. Safari supports the new Apple Intelligence Summary feature, which gives you an overview of a web page or article. If you see a purple flash on the URL bar, you can click on it to see a summary. You can also select any text anywhere in Safari, then click the Writing tool and then select Summary to get a summary of the highlighted text. This summary feature is part of the writing tool. A summary is only one paragraph at most, so you don’tAlways get a full understanding of what's in the article. It's more of an overview to let you know if it's worth reading. In the Notes app, you can select text and choose the Writing Tools summary option, just like you can in Safari, but there are also summaries created for recorded phone call transcripts and voice memo transcripts captured using the Notes app. Across all apps, you can select any text and use writing tools to generate a summary of that text, just like you can in Safari and Notes. Smart replies are a feature in Mail and Messages that you'll see in the suggestions bar above your keyboard. Smart Reply and other Apple Intelligence features are currently in beta and will be released in beta. The summary has room for improvement in terms of thoroughness, but the option is already useful, especially when viewing notifications or scrolling through emails on the lock screen. Summaries for longer form content may be more detailed, for now, you only get a high-level overview. Smart Reply is of questionable use right now, and hopefully this will get better when Siri offers personal context capabilities, which will be released next year. Right now, Smart Reply is almost annoying, but we're in the early days of Apple Intelligence. To use the summary and smart reply Apple Intelligence features, you need an Apple Intelligence-capable device. This includes iPhone 15 Pro, iPhone 15 Pro Max, any iPhone 16 model, any iPad with an M-series chip, and any Mac with an M-series chip. Apple Intelligence features are not available on any other devices because of the processing power and memory required. Apple Intelligence is currently in beta for iOS 18.1, iPadOS 18.1, and macOS Sequoia 15.1. The beta version is available to developers and public beta testers, with the update expected to be released on Monday, October 28. The above is Apple Intelligence: detailed information about summaries and smart replies. For more information, please pay attention to other related articles on the PHP Chinese website! 
You can turn off Message Digest by going to Settings > Apps > Messages and turning off Digest Messages. Turn off message digest in the same way, but in the "Mail" section. 
Notification summaries work with built-in apps like Messages as well as third-party apps. Apple Intelligence tries to find the most relevant content. For messaging apps or emails, it provides a brief summary of a message or two, while aggregations like camera action notifications are grouped so you can see at a glance which areas have motion activation. Safari
The snippet is technically part of Reader Mode, but you don't have to always be in Reader Mode to view it. For longer articles, the summary will appear automatically, but if you don't see the summary, click "Reader Mode" and then click the "Summary" button. notes
In the note with the audio recording, click on it and you will see a "Summary" option at the top where you can choose to get a transcript summary. Please note that phone recordings, voice memos in Notes, and transcripts of these recordings are available to everyone. Only the summary feature is an Apple Intelligence feature. Other applications
Smart replies
Smart replies are useful when you reply to a message that contains a clear question (such as "Do you want to go to a movie tonight?"). or "Did you watch [insert popular TV show here] last night?"
This is less useful for most other replies. Smart Replies don't seem to learn from an individual's tone or voice, and most of the time, the suggestions don't always sound like they're coming from a human. It tends to use a lot of "haha" replies and exclamation points, and when it doesn't suggest a "haha" as a reply, it often rephrases what the other person said, which is generally not how people respond to messages. How useful are these features?
Apple Intelligence Requirements
Release date
Source: macrumors.com