As you can see in the image above, it compares the alleged screen protector against that of the iPhone XS, and from a glance it appears that the chin on both phones are pretty much identical in size. There might be some slight differences but to the naked eye, they appear to be almost the same. The leaked photos also shows it compared to that of the Huawei Mate 20 Pro, where at a glance the Galaxy S10+ appears to be marginally thinner, but like we said, this is at a glance so the exact measurements are unknown.
That being said, there is a bit of confusion going on now regarding the Samsung Galaxy S10 that will be launching in 2019. This is because there are claims that there could be more than one Galaxy S10 variant, and that there could be anywhere between 3-4 variants, with all sporting different sizes like the “BeyondX” version which is said to feature a massive 6.7-inch screen.
In any case it’s probably best to take these reports with a grain of salt for now, but with CES and MWC 2019 coming up, we expect that we should have more details then.