Files app isn’t working

The only time that preinstalled apps are updated is when the iOS is updated. Preinstalled apps can’t be updated like standalone 3rd party apps.

iOS 13.5 was released yesterday. You could try updating the phone and see if that helps.

Hello CParvi,

Thank you for contacting Apple Support Community! I see you are having issues opening you pdf saved files in your Files application on your iPhone 7 Plus, It is important to be able to easily access your files seamlessly as intended.

To be able to open your files from the Files application specifically the ones saved on iCloud Drive you need a good internet connection, if you are trying to access them using your cellular data connection it will be affected with the speed and strength of your cellular connection, using Wi-Fi with iCloud files is faster, or if you don't want to use the internet to retrieve your files daily you can always store your pdfs on your local iPhone memory if your storage is efficient for that, How to check the storage on your iPhone, iPad, and iPod touch

For the Files application freezing or not responding you can check this article, If an app unexpectedly quits, stops responding, or won’t open.

If force quit or restart the device frequently doesn't help the freezing of the app then following the steps for hard restarting your device will be your next step, following this part " Press and hold both the Top (or Side) button and the Volume Down buttons until you see the Apple logo." in the article If your iPhone, iPad, or iPod touch won't turn on or is frozen.

The freezing of the application while trying to retrieve data from iCloud might be related with how much storage you have left on iCloud, Manage your iCloud storage

This article shows more information about using the Files Application, Use the Files app on your iPhone, iPad, or iPod touch

To be able to access the files you stored in the iCloud Drive from other devices this article has guidelines steps, Access iCloud Drive files from your iPhone and other devices

You can also delete the application and re-download it again from the App Store if the freezing problem was not resolved, How to delete apps on your iPhone, iPad, and iPod touch

Take Care!

Hello CParvi,

I see the troubleshooting steps didn't help with the issue, there is further trouble shooting steps that can be performed with your iPhone to further isolate if its a software or hardware issue, you can always Contact Apple Support for more diagnostics and repair steps, Contact Support.

Take Care!

I have the same iPhone model and it works.

Do you have a pdf reader App installed, or just the default App that opens pdf, "Markup" I think it's called. If you have a reader/editor App trying to open them it may be the problem. If not, perhaps try deleting the Files App and reinstall it.

You’re welcome. I’m glad to hear it helped.