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PDF Opening Issues

Fix Adobe Acrobat Reader Stuck Updating on iPhone 6 Plus

Huma Ashraf ChHuma Ashraf Ch Oct 19, 2026 868 views

Question details

The user is unable to open or update the Adobe Acrobat Reader application on an iPhone 6 Plus because the app becomes unresponsive or stuck during the update process.

How to Fix Adobe Acrobat Reader Stuck Updating or Won't Open on iPhone 6 Plus
Product
Adobe Acrobat Reader
Device & OS
iOS (iPhone 6 Plus)
Scenario
Attempting to launch the PDF reader app or updating it via the App Store while an iOS system update is pending.
Observed behavior
The application icon shows a loading or waiting status but never finishes the update, and the app completely fails to open when tapped.
Before you start

Ensure your iPhone is connected to a stable Wi-Fi network and plugged into a charger, as system updates require sufficient battery life and a strong internet connection.

Solution 1Recommended

Install Pending iOS Updates and Restart

Clearing out pending iOS system updates is the most effective way to unfreeze stuck App Store downloads and resolve app launch failures.

When an older device like the iPhone 6 Plus has a pending system update, Apple often halts App Store installations to prioritize OS resources. Completing the iOS update usually forces the App Store queue to resume normally.

1
Check for System Updates

Open the Settings app on your iPhone, scroll down, and tap on 'General', then select 'Software Update'.

2
Download and Install

If an iOS update is available, tap 'Download and Install' and follow the on-screen instructions to complete the system update.

3
Restart the Device

Once the update is fully installed and your device reboots, manually restart the iPhone once more to ensure system caches are cleared.

4
Retry the App Update

Open the App Store, navigate to your account profile, and try updating or opening Adobe Acrobat Reader again.

Install Pending iOS Updates and Restart
App Store Sync: Completing the system update will automatically sync your Apple ID credentials, which often resolves underlying permissions issues blocking the app update.
All-in-One Mobile PDF Alternative

Read and Manage PDFs Smoothly with WPS Office

If your current PDF reader continues to crash or fails to update on older iOS devices, WPS Office provides a lightweight, highly compatible, and feature-rich alternative for seamlessly viewing and editing PDFs on your iPhone.

  1. 1. Download WPS Office: Open the App Store on your iPhone, search for WPS Office, and download the free application.
  2. 2. Locate Your PDF: Launch WPS Office and navigate to the 'Files' tab to browse local device storage or connected cloud drives.
  3. 3. Open and Read: Tap on your PDF file to instantly open it with the WPS PDF reader without lag or update errors.
  4. 4. Annotate the Document: Use the bottom toolbar to access highlighters, pens, and signature tools to easily modify your PDF.
Optimized for older devices like iPhone 6 Plus with a lightweight app footprint.Fully compatible with standard Adobe PDF document formats.Built-in mobile reading mode for a comfortable PDF viewing experience.Free tools to highlight, annotate, and sign PDF documents directly from your phone.
microsoft office alternative - wps office

Frequently Asked Questions

Why do apps get stuck on 'waiting' or 'updating' on my iPhone?

Apps often get stuck during updates due to pending iOS system updates, insufficient device storage space, or an unstable internet connection that interrupts the App Store's download process.

Can I read PDFs on my iPhone without downloading Adobe Acrobat?

Yes. You can view basic PDF files using the built-in Safari browser, the Apple Books app, or the iOS Files app. For more advanced reading and editing features, lightweight alternatives like WPS Office are highly recommended.

How do I free up storage space on my iPhone 6 Plus to allow updates?

Go to Settings > General > iPhone Storage to see which apps are using the most space. You can free up storage by enabling 'Offload Unused Apps', deleting old videos and messages, or moving photos to iCloud.

Will I lose my PDF files if I delete and reinstall a PDF app?

If your PDFs are saved directly inside the app's local folder, they may be deleted when you remove the app. Always save important documents to the iOS Files app (iCloud Drive) or a third-party cloud service before uninstalling.