We already checked Samsung Galaxy S23 ultra

our Samsung IMEI checker work fine with new Samsung Galax s23 family

Code:
IMEI	3525938700xxxx
Model	SM-S918BZGGXBA
Name Samsung Galaxy S23 ULTRA
Serial number	R3xxxxxxW
Manufacture date	2023-01-09
Country and carrier	Korea
try it and post results

› See More: Warranty, IMEI check for Samsung Galaxy S23 ultra, S23+ and all new Samsung