The Galaxy S25 Ultra supports both eSIM and physical SIM cards. The exact configuration varies by region.
US models:
- 1 physical Nano SIM slot
- Dual eSIM support (S25 Ultra exclusive)
- Run 2 eSIMs simultaneously without physical card
- Store up to 20 eSIM profiles (2 active at once)
International models:
- 2 physical Nano SIM slots
- 2 eSIM profiles
- Manage up to 4 plans total, 2 active simultaneously
Chinese models:
- Dual physical Nano SIM only
- No eSIM support (regional regulations)
How dual SIM works:
Both numbers can make/receive calls and texts. Data works on one SIM at a time. Switch data SIM in Settings > Connections > SIM manager.
Setting up eSIM:
Go to Settings > Connections > SIM manager > Add eSIM. Scan the QR code from your carrier or enter details manually. All major US carriers (AT&T, Verizon, T-Mobile) support eSIM activation.
Popular use cases:
- Keep home number while using local travel SIMs
- Separate work and personal lines
- Use multiple carriers for better coverage
- Add international travel eSIMs without swapping physical cards
The Galaxy S25 Ultra's dual eSIM capability is unique in Samsung's lineup, making it the best choice for users who need maximum flexibility in managing multiple lines.
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