History I have had every S20 model. I run dual sim with Tmobile and Verizon. The S23 with Tmobile as primary and verizon as secondary. I would get 3 carrier aggregation SA on Tmobile with both sims active. Usually it was N41+N41+N25. I have now switched to the S24U unlocked but some reason it will only carrier Aggregate 2 band N41 + N25 will using dual sim. Samsung says it is working like it should. I find it hard to believe the S23U is a faster device than the S24U.
If I do turn off the dual sims, reboot, I get 4 carrier aggregation.
