: Be aware that the app creates test data on your storage. If a test is interrupted, you may need to clear the app's data or uninstall it to recover that temporary space.
This utility tool is designed to verify the authenticity and performance of your storage media: Download Card Test Pro FaresCD Com apk
Are you specifically trying to you just purchased, or are you troubleshooting a slow storage issue? SD Card Test Pro - Fake Check - Apps on Google Play : Be aware that the app creates test data on your storage