DocHub is an innovative platform that simplifies document editing, signing, and distribution, empowering users to manage their files with ease. Whether you're using a Samsung Galaxy F14 4G, Apple iPhone 15 Plus, Xiaomi Redmi Note 12 Pro (Global), Vivo S18 Pro, or Sony Xperia 1 V, you can access our editor directly via your mobile web browser. With deep integration into Google Workspace, changing a PDF password on mobile is a seamless experience that can be done for free, ensuring your documents remain secure.
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In this tutorial, you will learn how to password protect a PDF file on your iPhone. First, open the Files app and make sure the PDF file is available locally. PDF files on iCloud Drive cannot be locked on iOS 15. Open the file you want to lock, tap the share icon, select "Lock PDF," and set a password. Re-enter the password to verify and tap "Done." Your file is now locked and password protected, indicated by a lock icon.
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