You claimed that nobody else was able to get so close to the edges due to Apple's patents. I was pointing out that Samsung already gets as close or closer to the left/right hand edges before the X was even announced.
While they didn't go fully to the top or bottom, that doesn't alter how the technology itself would work. If they can get close to the horizontal edges, they can get close to the vertical edges.
While they didn't go fully to the top or bottom, that doesn't alter how the technology itself would work. If they can get close to the horizontal edges, they can get close to the vertical edges.