4th fingerprint missing ? why only 3

[___romm___]

Hi Team,

setting up my S25 FE, I see that only 3 fingerprints are possible. maybe I am missing someting as I regularly use 4 fingerprints (both thumbs and both index for when the phone is on a table). 

I saw the works arounds about settings up several fingers under the same fingerprints, but I really struggle to understand the reason behind this limitation. is there any ways to get a 4th fingerprint set up ?

Thanks. 

[Fiona26]

Seems it's the same with the S24 FE. Wondering if it's because the FE has the optical scanner where the S Series use the ultrasonic which allow 4. I will have to check this on my tab s9 ultra which uses optical.

[lminvti]

Hi there 👋

Its because it's using optical fingerprint reader while flagships uses ultrasonic one.