PDF Editing Issues

How to Sign and Save an E-Signature on an Android Phone

Adam Davis Oct 19, 2026 869 views

Question details

The user wants to learn how to digitally sign PDF documents and securely save an electronic signature for reuse using an Android smartphone.

How to Sign and Save an E-Signature on an Android Phone

Product: PDF Editor
Device & OS: Android
Scenario: Signing official forms, contracts, or business documents directly on a mobile device without needing to print them.
Observed behavior: The user requires step-by-step instructions on creating, applying, and saving an e-signature in mobile PDF applications.

Before you start

Ensure the PDF document is not encrypted or restricted against editing and signing, and that you have a reliable PDF reader application installed on your Android device.

Solution 1Recommended

Use WPS Office for Android to Sign PDFs

WPS Office offers a built-in mobile PDF signature tool that allows you to seamlessly create, save, and apply e-signatures.

WPS Office provides an all-in-one mobile suite with comprehensive PDF editing tools. Its signature feature is highly optimized for touch screens, making it easy to hand-draw a professional-looking signature directly on your Android phone.

Open the PDF File

Launch the WPS Office app on your Android device and open the PDF document you need to sign.

Access the Signature Tool

Tap 'Tools' at the bottom of the screen, navigate to the 'PDF Edit' or 'Annotation' tab, and select 'PDF Signature' (or 'Fill & Sign').

Create and Save Your Signature

Tap 'Create Signature' to draw your name on the screen. Make sure the option to save the signature is checked so it can be reused later.

Apply to the Document

Tap 'Done' to apply the signature to your PDF. You can then drag to reposition it and use the corner handles to resize the signature to fit the document's line.

Reusable Signatures: Once saved, your signature is stored securely in the app and can be quickly applied to any future PDF documents with a single tap.

Solution 2

Use Adobe Acrobat Reader for Android

Adobe Acrobat provides a dedicated Fill & Sign feature specifically designed for adding and saving signatures on mobile devices.

Sign PDFs on the Go with WPS Office

WPS Office provides a powerful, mobile-friendly PDF editor that empowers you to read, edit, annotate, and digitally sign documents directly from your Android smartphone without switching apps.

1. Download the App: Install WPS Office for free from the Google Play Store on your Android phone.
2. Open Your Document: Launch WPS Office and open the PDF document that requires your signature.
3. Navigate to PDF Signature: Tap 'Tools' in the bottom menu, switch to the PDF editing tools, and select 'PDF Signature'.
4. Sign and Save: Create your signature, place it perfectly onto the document page, and tap the save icon to finish.

Easily draw, type, or import electronic signatures directly on your mobile screen.Fully compatible with standard Adobe PDF files and all Microsoft Office document formats.Securely save reusable e-signatures to sign future documents in seconds.Lightweight app combining Word, Excel, PowerPoint, and PDF editing features for free.

microsoft office alternative - wps office

Frequently Asked Questions

Are electronic signatures created on my Android phone legally binding?

In most regions, e-signatures applied via reliable PDF apps like WPS Office or Adobe Acrobat are considered legally binding for standard business contracts, agreements, and forms, although highly sensitive documents may require specific digital certificates depending on local laws.

Why can't I add a signature to my PDF document?

The document might be restricted by the original author. You can check the document's security properties to see if PDF editing, form filling, and signing permissions have been disabled by a password.

Can I type my signature instead of drawing it on my phone?

Yes, many modern PDF editors allow you to type your name using standardized cursive signature fonts, or you can import a photo of your actual handwritten signature directly from your Android phone's photo gallery.

How do I delete a saved signature on my Android PDF app?

In your PDF app's signature tool, open the signature placement menu. Long-press your saved signature or tap the 'minus' or 'delete' icon next to it to permanently remove it from your saved list.

PDF Troubleshooting