Set a default app for each file type on iPhone so PDFs, images, and docs open in your preferred app automatically.
This is for iPhone and iPad users on iOS 26+ who want faster file workflows and fewer “Open With” prompts.
Time required: about 1 minute.

Quick Answer

In Files, long-press a file type (like PDF), tap Get Info, choose Always Open With, and select your app. From then on, that file type opens there by default.

The One Trick: Set Per-File-Type Default Apps in Files

Instead of choosing an app every single time, iOS 26 lets you lock file types to preferred apps. Example: PDFs in Acrobat, images in Photoshop, and documents in Word—automatically.

Prerequisites

  • iPhone or iPad running iOS/iPadOS 26 or later
  • Files app available
  • The app you want as default already installed (for example, Acrobat or Word)

Step-by-Step (End-to-End)

  1. Open the Files app.
    Go to a folder containing the file type you want to configure (such as a PDF).
  2. Long-press a file of that type.
    The context menu should appear.
  3. Tap Get Info.
    Open the file details panel.
  4. Select Always Open With.
    Choose your preferred app from the list.
  5. Confirm and exit.
    Close the panel after selecting the app.
  6. Test the behavior.
    Tap another file of the same type and verify it opens directly in your chosen app.

Expected Result (Checks)

  • Files of that format open directly in your selected app
  • You stop seeing repetitive “Open With” prompts for that type
  • Your workflow feels faster when handling recurring file formats

Common Mistakes

  • Trying to set a default before installing the target app
  • Expecting one setting to apply to every format (it’s per file type)
  • Selecting the wrong app once and assuming it can’t be changed
  • Testing with a different format and thinking the setting failed

Troubleshooting

  • No “Always Open With” option: Open the file once via Open With, then try Get Info again.
  • Preferred app missing: Install or update the app from the App Store, then retry.
  • Wrong app keeps opening: Reopen Get Info for that file type and reset/change the default app.
  • Still seeing prompts: Confirm you’re testing the same extension (for example .pdf vs .docx).

Why This Trick Is Worth Using

It removes micro-friction from everyday file handling. One quick setup gives you smoother, cleaner app handoffs all day.

References

Next Step

Set defaults for your top three file types (PDF, DOCX, and images) so almost every work file opens exactly where you want.

Related reads on FreeTechTricks