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Get DeFluence (root) old version APK for Android
This app toggles voice-call fluence mode (root only)
On many custom roms, users experience a call echo problem. This is where the person on the other end of the line states that your phone is echoing. Fluency- or noise filtering - is usually the culprit. This app was created for my own personal use, and I am sharing it with you free of charge. I am on XDA as stvn1337, feel free to donate to me if this app helps you.