你可以通過多種方式在iPhone上簽名文件，具體方法取決於所使用的應用和文件格式。第一，在“文件”應用中使用“標記”工具打開PDF文件，點擊“ ”選擇“添加簽名”，手寫簽名後插入文檔；第二，若使用Mac可藉助“預覽”應用開始簽名並同步到iPhone完成；第三，使用Adobe Acrobat Reader或DocuSign等第三方應用，提供保存簽名及多人簽署等功能；第四，可通過“備忘錄”應用掃描文件後進行標記並添加簽名。以上方法適用於不同場景，滿足從簡單到復雜的需求。

You can sign a document on your iPhone in several straightforward ways, depending on the app you're using and the format of the file. Here's how to do it without any hassle.

Use the Markup Tool in the Files App

Apple has built-in tools that let you sign documents directly from the Files app. This works well for PDFs and is super easy:

• Open the document in Files
• Tap it to open, then tap the share icon
• Choose Markup and Sign
• Tap the plus ( ) button, then select Add Signature

You'll be prompted to draw your signature with your finger. Once done, place it wherever needed on the document and hit Done . You can also add text or initials this way.

This method is perfect if you don't want to download extra apps and just need to get it done fast.

Try the Preview App (If You Synced via Mac)

If you're part of the Apple ecosystem and use a Mac, you might already know about the Preview app. But did you know you can start signing a document on your Mac and finish it on your iPhone?

• Open the PDF in Preview on your Mac
• Click Show Markup Toolbar , then choose Sign
• Draw your signature
• Save and sync the file to iCloud
• Open it on your iPhone — the signature will be there and ready to place

It's handy when you're switching between devices or started something on your desktop and need to finish on the go.

Use Third-Party Apps Like Adobe or DocuSign

If you work with documents often, apps like Adobe Acrobat Reader , DocuSign , or PDF Expert are worth installing. These offer more advanced features like saving your signature for future use and sending signed documents directly from the app.

Here's a quick flow using Adobe Acrobat Reader :

• Open the PDF in Adobe Acrobat Reader
• Tap the pencil icon (Fill & Sign)
• Tap Sign
• Create your signature by typing, drawing, or uploading an image
• Place it where needed and save

These apps are great for more complex workflows or when you need to collect signatures from multiple people.

Don't Forget About Notes

A lesser-known trick is using the Notes app to create a signature and insert it into a document:

• Open Notes , start a new note, and tap the plus ( ) at the top
• Select Scan Documents
• Scan or import your file
• Tap the three dots , then Markup
• Add your signature as before and place it

It's not the most obvious route, but it works well for quick edits and small files.

Signing documents on your iPhone doesn't have to be complicated. Whether you stick with built-in tools or opt for a third-party app depends on how often you do this and what kind of control you need. Most everyday tasks can be handled without ever leaving your phone.

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