OnePlus 7

Android 9.0 (Pie); OxygenOS 9;
6.41 inches, 100.9 cm2 (~85.5% screen-to-body ratio)
Qualcomm SDM855 Snapdragon 855 (7 nm)
256 GB, 8 GB RAM or 128 GB, 6 GB RAM

OnePlus 6

Android 8.1 (Oreo), upgradable to Android 9.0 (Pie); OxygenOS 9.0.2;
6.28 inches, 98.4 cm2 (~83.8% screen-to-body ratio)
Qualcomm SDM845 Snapdragon 845 (10 nm)
128/256 GB, 8 GB RAM or 64 GB, 6 GB RAM