US Galaxy owners testing the One UI 8.5 Beta have spotted a long-overdue addition: Samsung is finally bringing granular dual SIM management stateside. After years of limiting American devices to basic toggles while international models shipped with robust multi-SIM controls, this beta release officially axes the frustrating regional restriction.
The One UI 8.5 Beta Discovery
The update surfaced on Reddit when user slylte, a US Mobile subscriber, posted screenshots of the new interface running on a Galaxy S25 Ultra. The One UI 8.5 Beta reveals a unified dashboard featuring dedicated routing options for voice calls, text messages, and mobile data. Instead of jumping through hoops to manage secondary networks, users can handle complex dual-network setups directly within the primary settings menu.
Bridging the Global Feature Gap
Prior to this beta, balancing a physical SIM and an eSIM on an American Galaxy phone meant manually swapping active profiles for different tasks. One UI 8.5 replaces that chore with automatic defaults.
You can precisely configure the software to permanently push all mobile data through a primary line, while restricting a secondary work number strictly to outgoing voice calls. This system-level routing means you never have to manually toggle your active lines before dialing a number or firing off a quick SMS.
Impact on Multi-Line Subscribers
For subscribers juggling two numbers—particularly those taking advantage of dual-network carriers like US Mobile—these precise settings simply make the device work the way it always should have. You tell the phone how to handle your physical SIM and eSIM, and the OS manages the routing in the background.
As for when the rest of the US user base will see these changes, the One UI 8.5 Beta is currently in active testing for the Galaxy S25 Ultra. If development follows Samsung's usual release cadence, expect this dedicated dual SIM dashboard to arrive on the stable channel when the finalized software rolls out to the broader Galaxy lineup later this spring.