It's essential for you to always have access to your applications.
I appreciate your valuable input. Wi-Fi is a great connection option for downloading and updating software and applications.
Teriblok, I apologize you are having trouble with downloading applications on your Galaxy S9. I did research the error message you posted and found a solution to stop the error message DF-DFERH. Go to Settings>Tap Applications>Scroll down and select Google Play Store>Select Clear Data and Clear cache. After you complete this step please power cycle your phone and retry. Let us know the results!
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