How to Install the Third iOS 18 Public Beta

Apple 已向公共 Beta 測試人員提供了 iOS 18 和 iPadOS 18 的第三個 Beta 版，將新軟體推向大眾。繼續閱讀，了解如何為您的裝置準備測試版軟體並安裝它。

註冊獲取‌iOS 18‌或‌iPadOS 18 Beta非常簡單，只需在Apple免費註冊iPhone或iPad即可完成Apple 測試版軟體程式。本文末尾提供了在設備上安裝該軟體所需完成的步驟，但在您繼續之前，這裡有一些值得考慮的事項。

我的 iPhone 與 iOS 18 相容嗎？

iOS 18 與iOS 17 相容於與iOS 17 相同的iPhone 型號，因此包括以下設備：

• iPhone 15
• iPhone 15 Plus
• iPhone 15 Pro
• iPhone 15 Plus
1
iPhone 14 Pro
• iPhone 14 Pro Max
• iPhone 13
• iPhone 13 mini
• iPhone 13 Pro
• iPhone 13 Proo Pro
• iPhone 12 Pro Max
• iPhone 11

iPhone 11 Pro
• iPhone 11 Pro Max
• iPhone XS
• iPhone XS Max
• iPhone XR
• iPhone
• iPadOS 18 不再支援配備A10X Fusion 晶片的iPad 型號，該晶片用於10.5 吋iPad Pro 和第二代12.9 吋iPad Pro。第六代 iPad 也將從相容性清單中刪除，但仍支援第七代 iPad。這意味著iPadOS 18 與以下iPad 型號相容：
• iPad Pro：2018 年及更高版本
• iPad Air：2019 年及更高版本
• iPadiPad：2019 年及更高版本

iPad：2020 年及更高版本

如果您不確定自己擁有哪種‌iPad‌ 型號，請轉到“設置”->“通用”->“關於”，您會發現其中列出了型號名稱。

• 我應該安裝 iOS 18 Public Beta 嗎？
• 在下載之前更新，值得注意的是，蘋果不建議在你的主 iPhone 上安裝 iOS 18 Beta，所以如果你有輔助設備，請使用它。這是測試版軟體，這意味著經常會出現錯誤和問題，從而導致軟體無法正常工作或導致其他問題。如果您擔心潛在問題，請推遲安裝並等待 Apple 在今年稍後推出最終穩定版本。

首先對您的裝置進行存檔備份
• 在安裝測試版之前，請確保備份您的裝置請先使用以下方法安裝軟體，否則如果出現問題，您將無法還原到 iOS 17。

使用隨附的電纜將 iPhone 插入 Mac。

允許配件連接點選對話方塊提示中的「允許」。

點擊 Dock 中的 Finder 圖標，打開 Finder 視窗。

在側邊欄中點選您的 iOS 裝置名稱。

如果這是第一次連接您的裝置到 Mac 上，在 Finder 視窗中按一下「信任」。

3. 出現提示時，輕按裝置上的“信任”，然後輸入密碼進行確認。
4. 
   在「常規」標籤中，點擊「備份」旁邊的圓圈將 iPad 上的所有資料傳輸到這台 Mac。

   如果您想加密備份，請選取加密本機備份旁的複選框，然後輸入密碼以保護您的資料。

   
   如果您不想建立備份加密備份，或者您已經設定了加密備份，請點擊立即備份。備份完成後，您可以在管理備份按鈕上方的常規標籤中找到上次備份的日期和時間。
5. 
   

   

   
   最後，存檔備份：選擇管理備份➝選擇備份，然後右鍵單擊備份並選擇存檔。
6. 請記住，當您將來手動或自動備份 iPhone 時，此備份不會被覆蓋，因此您可以隨時使用“恢復備份...”選項來恢復它在同一個 Finder 屏幕中。
8. 如何下載 iOS 18 Public Beta
9. 
   

   

   1. On your iOS device, open up Safari and navigate to the Apple Beta Software Program website.
   2. Tap the Sign up button and enter your Apple ID credentials, or sign in with your Apple ID if you've signed up to beta test a previous update.
   3. Agree to the Apple Beta Software Program terms and conditions if required.
   4. After signing in, you'll see a main screen that's a Guide for Public Betas. Click on iOS (or iPadOS if you're installing on an iPad).
   5. Read through Apple's instructions carefully, and then using the link in the "Get Started" section, select enroll your iOS device.
   6. Make sure to make an archived backup of your current version of iOS using Finder by following Apple's instructions or using our tutorial above. This will allow you to downgrade back to iOS 17 if necessary and is crucial if you don't enjoy the iOS 18 testing experience.
   7. Now on your iOS or iPadOS device, go to Settings -> General -> Software Update -> Beta Update, then choose the iOS 18 public beta you'd like to install.
   8. Once the beta update has been downloaded you can tap Install Now to get it set up, and from there, the iPhone will install the software, restart, and you'll be up and running with the iOS 18 software.

   Note that if your device is running iOS 16.3 or earlier, you'll need to download the iOS 18 configuration profile after enrolling. On your iPhone, go to beta.apple.com/profile to download the configuration profile. Your iPhone will notify you when the profile has been downloaded. Open Settings, tap the profile and follow the onscreen instructions to allow installation.
   

   iOS 18 Features

   ‌iOS 18 introduces Apple Intelligence, a suite of AI features deeply integrated into the operating system. While not all functionalities are available yet, it includes Writing Tools for rewriting, polishing, proofreading, and summarizing text across apps. You can also generate custom images with Image Playground and create custom emojis through the Genmoji feature. Additionally, Siri is undergoing a complete overhaul. However, note that Apple Intelligence is not yet active in the beta versions.

   In addition to the AI features (which will be exclusive to the iPhone 15 Pro models and M-series iPads), ‌iOS 18‌ introduces a redesigned Home Screen that allows for rearranging app icons and widgets with open spaces. It also includes a tint option and new darker colors for Dark Mode.

   • How to Downgrade From the iOS 18 Beta to iOS 17

   Control Center has been revamped, allowing you to pick and choose what you want to feature from the new Controls Gallery. With multiple pages available, you can group related controls and customize their sizes. Additionally, the Flashlight and Camera icons on the Lock Screen can be swapped out, and you can select Control Center options for the ‌iPhone 15 Pro‌ Action Button.

   Safari now features a summary view of webpages, allowing you to see key information at a glance. The Photos app has been revamped to highlight your best images more effectively. A new Passwords app streamlines access to your saved passwords and logins, and you can now secure any app using Face ID or Touch ID.

   There are many more new features in ‌iOS 18‌ and ‌iPadOS 18‌ that aren't mentioned here, so for a more in-depth look make sure to check out our iOS 18 roundup and our iPadOS 18 roundup. iOS 18 is expected to get its official public release in the fall.

   Related Roundups: iOS 18, iPadOS 18Related Forums: iOS 18, iPadOS 18

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