Vivo has been granted a patent for phones packing quad front cameras housed in a hole-punch cutout with different positioning options.
source https://gadgets.ndtv.com/mobiles/news/vivo-quad-front-camera-design-hole-punch-patents-report-2156831
source https://gadgets.ndtv.com/mobiles/news/vivo-quad-front-camera-design-hole-punch-patents-report-2156831
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