Inferior fingerprint scanners to wiggle under midrangers' screens
The midrange Galaxies that will be anointed with the in-display readers, however, will have scanners of the cheaper and a tad slower optical variety, while the ultrasonic fingerprint modules will be reserved for the Galaxy S and Note lines.
This trend for using predominantly optical readers will hold for a while, it seems, as research firm IHS envisages a breakneck pace of in-display finger scanning growth - from 30 million last year to 180 million in 2019 - but only a fraction of those will be ultrasonic.
In fact, as you can see from the IHS graph below, even in 2022, when we should have ten times more phones with the technology than last year, ultrasonic finger readers for display installment are expected to be a fraction of the total base. Oh well, hopefully the optical readers will be getting better with each iteration then.