PDF Editing Issues

How to Create Digital Signatures on Android and iOS in Adobe Acrobat

Rana GarciaRana Garcia Oct 27, 2026 869 views

Question details

The user wants to know if and how it is possible to create and apply digital signatures to PDF files using a mobile device.

How to Create Digital Signatures on Android and iOS
Product
Adobe Acrobat
Device & OS
Android and iOS
Scenario
Signing a PDF document on the go using a smartphone or tablet.
Observed behavior
The user needs to securely apply an electronic signature to a PDF document without requiring access to a desktop computer.
Before you start

Ensure you have the Adobe Acrobat mobile app installed on your Android or iOS device and that the PDF document you wish to sign is downloaded locally to your phone or accessible via cloud storage.

Solution 1Recommended

Sign PDFs using Adobe Acrobat on Mobile

The Adobe Acrobat mobile app features a built-in Fill & Sign tool that allows you to quickly create, place, and save digital signatures right from your mobile screen.

You can sign documents by drawing your signature with your finger or a stylus, typing your name, or uploading an existing image of your handwritten signature. The app saves your signature securely so you can reuse it on future documents with just one tap.

1
Open the PDF document

Launch the Adobe Acrobat app on your Android or iOS device, navigate to your files, and open the PDF document that requires a signature.

2
Access the Fill & Sign tool

Tap the blue 'Edit' icon (typically a pencil shape) in the bottom right corner of the screen, and select 'Fill & Sign' from the pop-up menu.

3
Create or choose your signature

Tap the 'Signature' icon (a fountain pen tip) in the bottom toolbar. If you have not created a signature yet, tap 'Create Signature' to draw, type, or import an image of your signature.

4
Place the signature and save

Tap anywhere on the document where you want the signature to appear. You can drag to reposition or use the handles to resize it. Once placed correctly, tap 'Done' in the top left corner to save the signed PDF.

Sign PDFs using Adobe Acrobat on Mobile
Signature Saved Across Devices: If you are logged into your Adobe account, your saved signature will sync across your devices, making it readily available whether you are on your smartphone, tablet, or desktop.
Free Mobile PDF Signer

Easily Sign PDFs on Android and iOS with WPS Office

WPS Office offers a comprehensive, free PDF toolkit for mobile devices, allowing you to instantly sign, annotate, and edit PDF documents on the go. It provides a lightweight, user-friendly interface that perfectly integrates with your mobile workflow.

  1. 1. Open your PDF in WPS Office: Launch the WPS Office app on your Android or iOS device and open the PDF file you need to sign.
  2. 2. Select the Signature tool: Tap 'Tools' at the bottom of the screen, navigate to the 'Annotation' tab, and select 'Signature'.
  3. 3. Draw and insert your signature: Tap 'Create Signature', draw your name directly on your device screen, and tap 'Done'. Tap anywhere on the PDF page to place the signature, adjust its size, and save your document.
Smoothly draw, type, or insert image signatures on your mobile screen.Fully compatible with all standard Adobe Acrobat PDF formats.All-in-one app that handles PDF, Word, Excel, and PowerPoint files without draining mobile storage.
microsoft office alternative - wps office

Frequently Asked Questions

Are digital signatures created on mobile devices legally binding?

Yes, in most jurisdictions, electronic signatures drawn or typed on mobile devices carry the same legal weight as a traditional handwritten signature, as long as they comply with standard e-signature regulations and intent can be proven.

Can I use a photo of my physical signature on mobile?

Yes. Both Adobe Acrobat and WPS Office allow you to upload an image of your physical signature directly from your phone's photo gallery to use as an electronic signature on your PDF.

Do I need a paid subscription to sign PDFs on my phone?

No, basic PDF signing features, such as drawing and placing a signature, are generally available for free in Adobe Acrobat Reader and WPS Office on both Android and iOS devices.