We hear you and we empathize with your experience with the recent updates on your Samsung Galaxy device having issues with storage that can't be accessed, and we apologize for the inconvenience it caused you.
If it happens to my device and it experiences unusual behavior, I will feel the same, given that I expect improved performance and ease of use when it comes to periodic updates, but this one turns out the opposite. But don't you worry; we are here to guide, assist, and offer solutions to restore your device's feature to working at optimum performance.
Step 1. Long press Samsung Members icon on Apps screen and tap Error reports.
Step 2. Tap OK on agreement popup to send system log data.
Step 3. Select Symptom category "Settings/System".
Step 4. Describe the problem in details and SEND.
Check Permission of the affected Apps
Step 1. Tap on Settings.
Step 2. Tap on Apps.
Step 3. Open the Menu.
Step 4. Tap on Permission manager.
Step 5. Choose a Permission.
Step 6. Choose an App (Facebook, etc).
Step 6. Choose Allow or Deny.
Use MyFile to browse your storage SD Card.
The My Files app stores every file you have on your phone or tablet. It's like the File Explorer on a PC or Finder on Mac, where you can easily view and move photos, videos, music, documents, and more. You can also remove files from the My Files app if you no longer need them. The Trash feature in My Files should be on by default, but you should make sure it's turned on just in case.
You can also set and check the storage space on your SD card to see if it is still suitable to be used.
If the problem persists, immediately bring your device to the nearest Samsung Authorized Service Center. Rest assured that our Samsung Engineers/Technicians are competent to assess your device with suggestions, and offer to provide prompt solutions to restore it up to optimum performance.
For more assistance and guidance, you may contact us via our online Samsung Customer Care support channels below.