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https://www.theunbiasedblog.com/2018/07/oxygen-os-5-0-4-brings-improved-image-quality-for-the-front-camera-july-security-patch-for-oneplus-3-and-3t.html
Oxygen OS 5.0.4 brings Improved image quality for the front camera, July security patch for OnePlus 3 and 3T