I'm personally not sure about the sensor brand, but I did find this:
Camera – Front
8MP Front Facing Camera 2x2 Binning for high quality FHD video conferencing Record at FHD/30fps Low light capabilities 5P Japanese Lens f/2.2 1.12um pixels – 16:9 Native Format – 3872x2192
Camera – Back
16MP Rear Facing Camera Record 4K/30fps or FHD/30fps Low light capabilities 6P Japanese Lens f/2.2 High output, ultra-high CRI LED flash PDAF (phase detection auto focus) Large 1.31um pixels – 4:3 Native Format – 4608x3456