How to Fix PDF Not Displaying Full Screen on iPhone Pro Max
Question details
Users experience gray margins when viewing PDFs in landscape mode on an iPhone Pro Max, preventing the document from filling the entire screen edge-to-edge.

- Product
- PDF Reader Apps
- Device & OS
- iPhone Pro Max (iOS)
- Scenario
- Viewing PDF files in landscape orientation on a mobile device.
- Observed behavior
- The PDF does not utilize the full screen space, leaving distracting gray margins on the sides, likely due to app layout limitations around the iPhone notch.
Ensure your iPhone's screen rotation lock is turned off and your device's zoom display settings are set to standard rather than zoomed, as this can affect app layouts.
Update iOS and Your PDF Reader App
Keeping your system and apps updated ensures you have the latest bug fixes for screen layout and notch-handling on newer iPhones.
Display glitches, including gray margins and incorrect full-screen rendering, are often addressed in routine software updates. Older versions of PDF apps might not be fully optimized for the unique iPhone Pro Max screen dimensions or its camera notch.
Open the App Store, tap your profile icon at the top right, scroll down to check for available updates, and tap 'Update' next to your PDF application.
Navigate to your iPhone Settings > General > Software Update. If a new iOS version is available, download and install it.
Relaunch the PDF reader, open a document, and rotate your phone to landscape mode to see if the gray margins are gone.

Check Document Aspect Ratio and Layout
Determine if the gray margin is caused by the specific formatting and fixed page size of the PDF file rather than the app itself.
View PDFs in True Full Screen with WPS Office
WPS Office is fully optimized for modern iOS devices, effortlessly adapting to the iPhone Pro Max notch. Enjoy seamless, edge-to-edge PDF reading, powerful editing tools, and an advanced mobile reading mode without distracting margins.
- 1. Install WPS Office: Download and install WPS Office for free from the App Store on your iPhone.
- 2. Open the PDF: Launch WPS Office, tap the '+' icon or 'Files', and select the PDF causing display issues.
- 3. Enable Mobile View: Tap the tools menu at the bottom and select 'Mobile View' to adjust the layout perfectly to your device screen.
- 4. Rotate to Landscape: Turn your device sideways to enjoy a full-screen, margin-free reading experience.

Frequently Asked Questions
Why does my iPhone show gray bars on the sides of my PDF?
Gray bars appear when the aspect ratio of the PDF page does not match your iPhone's ultra-wide screen. Additionally, some apps fail to extend content into the safe area around the camera notch in landscape mode.
Can I force a PDF to fit my screen on iPhone?
Yes, you can use features like 'Mobile View' in apps like WPS Office to break the fixed PDF layout. This reorganizes the text and images to wrap naturally, fitting your screen perfectly without zooming.
Is the gray margin a hardware issue with the iPhone Pro Max?
No, it is a software layout issue. The PDF application must be specifically updated and programmed by its developers to utilize the display area around the notch correctly in iOS.




