You can edit Word documents on iPhone using the free Microsoft Word app, but the experience is simpler than on a computer

Microsoft Word for iPhone lets you open, edit, and save documents directly on your phone. The app is free to read from the App Store, though some features require a Microsoft 365 subscription (which costs money). For basic editing — changing text, fixing typos, adjusting formatting — the free version works fine. The mobile version strips away some tools you'd have on a desktop, so certain complex documents may look or behave differently than they do on a computer.

The main trade-off is screen space. Your iPhone screen is small, so you'll see less of the document at once, and some buttons are harder to tap. If you're doing heavy editing or working with a document that has lots of columns, tables, or custom formatting, you might find it frustrating. For quick changes and light work, it's straightforward.

Key Takeaways

  • read the free Microsoft Word app from the App Store, sign in with your Microsoft account, and open a document stored in OneDrive, SharePoint, or your phone's local storage.
  • Tap the pencil icon at the top to switch from reading mode to editing mode, then tap any text to start making changes.
  • Some formatting options (like styles, advanced tables, and mail merge) are only available if you have a Microsoft 365 subscription.
  • Changes save automatically to OneDrive or your phone, but you should verify the document looks correct on a computer before sharing it with others.
  • If a document is too complex or has features your phone can't handle, the app will warn you or show limited formatting.

read the app and sign in

Open the App Store on your iPhone and search for "Microsoft Word". Tap the free app published by Microsoft Corporation and select "Get". You'll need to authenticate with Face ID, Touch ID, or your Apple ID password. Once installed, open the app and sign in with your Microsoft account (the email and password you use for Outlook, OneDrive, or Microsoft 365).

If you don't have a Microsoft account, you can create one for free at microsoft.com. You don't need to pay for anything to use Word on your phone for basic editing. If you want to unlock premium features like advanced formatting and design tools, you'd need to subscribe to Microsoft 365, but that's optional.

Open a document from OneDrive, SharePoint, or your phone

When you open Word, you'll see a list of recent documents. If the file you want isn't there, tap "Open" at the bottom. You can then browse OneDrive (Microsoft's cloud storage), SharePoint (if your workplace uses it), or "On This iPhone" (files stored locally on your phone).

OneDrive is the easiest option because your changes sync automatically across all your devices. If you store the document locally on your phone instead, you'll need to manually move it to OneDrive or email it if you want to access it elsewhere. For documents you're actively editing, OneDrive is the better choice.

Switch to editing mode and make changes

When you first open a document, you're in reading mode — the text is displayed but you can't edit it. Look for the pencil icon at the top right of the screen and tap it. The document will shift to editing mode, and you'll see a keyboard appear at the bottom.

Tap anywhere in the text to place your cursor, then type to add words or use backspace to delete. You can select text by tapping and dragging, then use the formatting buttons that appear (bold, italic, underline, color). The toolbar at the top shows common options like font size and alignment. If you need more formatting tools, swipe left on the toolbar to see additional buttons.

Use formatting and styling tools

The free version of Word on iPhone includes basic formatting: bold, italic, underline, text color, and paragraph alignment. You can also create bullet points and numbered lists by tapping the list icon in the toolbar. Tap the "A" with a dropdown arrow to change font or font size.

Some features are limited or missing on the mobile app. Styles (pre-designed formatting sets), headers and footers, page breaks, and advanced table editing require a Microsoft 365 subscription or aren't available on iPhone at all. If your document uses these features, they may not display correctly or you may not be able to edit them on your phone. In that case, it's better to make those changes on a computer.

Check your document on a computer before sharing

Because the iPhone version of Word is simpler than the desktop version, documents sometimes look different when you open them on a computer. Spacing, page breaks, table layouts, and custom formatting may shift. Before you send the document to someone else or submit it, open it on a computer (or ask someone else to) and verify it looks the way you intended.

This is especially important if the document has a specific format — a resume, a form, a report with a particular layout. A small change on your phone might push text onto a different page or break a table when viewed on a larger screen. Taking two minutes to check saves you from sending something that looks wrong.

Save and sync your changes

If you stored your document on OneDrive, changes save automatically as you type. You don't need to do anything. If you stored it locally on your phone, tap the three dots at the top right, then "Save" to make sure your changes are written to the file.

To move a locally stored document to OneDrive so it syncs across devices, tap the three dots, select "Share", and choose "Save to Cloud". This uploads the file to your OneDrive account. From then on, any edits you make on your phone will be visible on your computer and vice versa.

Frequently Asked Questions

Can I edit a Word document without a Microsoft account?

No. You must sign in with a Microsoft account to use the Word app on iPhone, even for free. If you don't have one, create it at microsoft.com. You don't need to pay anything — a free account is sufficient for basic editing.

What happens if my document has features the iPhone app doesn't support?

Word will open the document, but unsupported features (like mail merge, complex tables, or certain styles) may not display correctly or may be locked from editing. The app usually warns you when this happens. For heavy editing of complex documents, use a computer instead.

Do I need Microsoft 365 to edit on my iPhone?

No. The free Word app lets you edit basic documents without a subscription. Microsoft 365 unlocks premium design tools and advanced formatting, but it's not required for everyday editing like fixing text and changing fonts.

Will my edits show up on my computer?

Only if the document is stored on OneDrive or SharePoint. Changes sync automatically between devices when you use cloud storage. If you saved the file only on your phone, you'll need to manually upload it or email it to yourself to access it elsewhere.

Can I edit a document that's attached to an email?

Yes. Open the email, tap and hold the attachment, then select "Open in Microsoft Word". The app will open a copy of the document. When you finish editing, tap the three dots and choose "Save" or "Save to Cloud" to keep your changes. The original email attachment won't change — you're working on a separate copy.