Samsung is preparing "Lite additions to both the Galaxy S10 and Galaxy Note10 lineups. They will bear the model names SM-G770F and SM-N770F, respectively, and while the Note10 Lite is a mystery, a lot more is known about the S-phone.
The Samsung Galaxy S10 Lite may be another name for the Galaxy A91. It will be available in White, Black and Blue. They will be "Prism colors like the S10, which create a very slight gradient, as opposed to the "Aura colors of the Galaxy Note10.
Samsung Galaxy S10 in Prism White, Prism Black and Prism Blue
The rumored S10 Lite basically parrots what we've heard about the A91 a Snapdragon 855 chipset, 8/128GB, 4,500mAh battery with 45W fast charging. The camera department promises a 48MP main camera, 12MP ultra wide and a 5MP depth sensor on the back, plus a 32MP selfie cam on the front.
The screen is said to be a 6.7 1080p+ Super AMOLED panel, which will make it larger than the Galaxy S10+ (6.4) and about the same size as the S10 5G (6.7). That and having faster wired charging than the 4G versions of the S10 make the "lite moniker sound quite strange.