https://wccftech.com/galaxy-s10-new-materials-higher-resolution/

The Galaxy S10 might not be able to differentiate itself from the Galaxy S9 in terms of design thanks to a previous rumor, what Samsung could do to attract the masses is use a newer set of materials that could make the upcoming flagship more durable than ever before. Additionally, we have been seeing higher resolution smartphones getting released thanks to their taller displays. The Galaxy S10 might be the first device from the tech giant to surpass the QHD+ resolution barrier.

It has not been confirmed what materials are going to be used for the Galaxy S10 but Ice Universe has made it clear that the flagship will have a panel with a display density of 600PPI. In comparison, the Galaxy S9 features a display density of 570PPI. If Samsung maintains the same screen size for the Galaxy S10 and Galaxy S10 Plus as it did with its predecessors, then the upcoming phones will surely have a higher resolution.