Fix Text Formatting and Document Opening Issues on Windows Phone App
Question details
Users are unable to use underline, strikethrough, and text highlighting features, and documents or PDF files cannot be opened directly and must be saved first.

- Product
- Windows Phone Document App
- Device & OS
- Windows Phone (Lumia 950)
- Scenario
- Attempting to format text or directly open received documents and PDFs after a recent app or system update.
- Observed behavior
- Text formatting options fail to apply to the selected text. Opening documents directly is no longer possible, prompting the user to save the file before viewing.
Verify your current app version in the settings menu and ensure your device is fully charged before initiating any system or app updates.
Update the App and Restart the Device
Applying the latest updates and restarting the device can resolve temporary formatting bugs introduced in recent system updates.
Open the Windows Store on your device and navigate to the 'Downloads and updates' section.
Tap 'Check for updates' to see if a patch is available for your document application and install it.
Press and hold the Power button, then swipe down to power off. Wait a few seconds and turn the device back on.
Launch the app and attempt to apply strikethrough or highlight formatting to test if the issue is resolved.

Report the Bug to App Support
If the issue persists across updates, reporting detailed device information helps the development team release a targeted fix.
Use the Save Workaround for Document Opening
While waiting for a permanent fix, use this temporary workaround to access your PDF files and documents.
Format Text and Open PDFs Instantly with WPS Office
Avoid frustrating formatting bugs and forced file saves. WPS Office provides seamless document editing with reliable text formatting tools and the ability to open PDFs and documents instantly on modern mobile devices.
- 1. Install WPS Office: Download and install WPS Office from your device's app store or the official WPS website.
- 2. Open Documents Instantly: Tap on any received PDF or document file to open it directly in WPS Office without needing to save it first.
- 3. Apply Text Formatting: Select the text you wish to modify, tap the 'Tools' menu, and use the 'Home' tab to seamlessly apply underline, highlight, or strikethrough effects.

Frequently Asked Questions
Why do I have to save a PDF before opening it on my Windows Phone?
This is often caused by a bug in recent app or OS updates that disrupts the temporary file handling system. The app fails to process the file directly from memory, requiring it to be saved to local storage first.
How can I fix text highlighting and strikethrough not working?
Check your app store for any available updates, as developers frequently release patches for formatting glitches. If no update is available, restarting your device can sometimes clear temporary cache issues causing the formatting tools to fail.
What should I include when reporting app bugs to support?
Always include a clear description of the problem (e.g., underline formatting failing), your specific device model (like the Lumia 950), your operating system version, and the current version of the app you are using.




