Samsung Galaxy S25 Series

The Samsung Galaxy S25, S25+, and S25 Ultra all support eSIM with Dual eSIM capability. Released in January 2025, all three models retain the physical nano-SIM slot alongside two active eSIM slots.

Key Takeaways

• All Galaxy S25 models support eSIM and Dual eSIM.
• Physical nano-SIM slot retained — not eSIM-only.
• Run two active eSIM lines plus a physical SIM simultaneously.
• Device must be carrier-unlocked for third-party eSIMs.

Does the Galaxy S25 Support eSIM?

Yes. All three Galaxy S25 models support eSIM. Dual eSIM allows two lines to be active at the same time alongside the physical SIM — giving you up to three active lines on one device.

Regional note: Carrier-branded Galaxy S25 phones (from AT&T, T-Mobile, Verizon) may restrict eSIM activation for other providers. An unlocked Galaxy S25 purchased from Samsung.com or Best Buy Unlocked has the broadest eSIM compatibility.

Galaxy S25 Models and eSIM Compatibility

How to Activate eSIM on Galaxy S25

1. Open Settings.
2. Tap Connections, then SIM Manager.
3. Tap Add eSIM (or Add Mobile Plan).
4. Select Scan QR Code and point your camera at the Roamix QR code.
5. Tap Confirm and wait for the eSIM to install.
6. In SIM Manager, set the Roamix eSIM as your preferred data SIM.

Using Two Lines on Galaxy S25

Galaxy S25 supports Dual eSIM plus a physical SIM — three lines simultaneously. For travel:

• Home carrier (SIM 1 or eSIM 1): Calls and texts. Data disabled.
• Roamix eSIM: Set as preferred data SIM in SIM Manager. Data Roaming on.

Configure the preferred data SIM at Settings → Connections → SIM Manager → Preferred SIM for mobile data.

Galaxy S25 eSIM for International Travel

Roamix works with any unlocked Galaxy S25. Purchase a plan, scan the QR code, and your Samsung connects to local networks when you arrive.

Carrier lock check: Settings → General Management → Device Information → IMEI status. Contact your carrier to request an unlock.

Samsung eSIM Transfer on Galaxy S25

Galaxy S25 running OneUI 7 supports eSIM Transfer — if you upgrade to a new Samsung device, you can move eSIM profiles to the new phone without re-scanning a QR code. This works via Samsung's device-to-device transfer during Galaxy setup. Note: this depends on the eSIM provider allowing transfers. If an eSIM Transfer fails for a Roamix plan, contact Roamix support for a replacement QR code.

Galaxy S25 eSIM Troubleshooting

"Add eSIM" missing from SIM Manager: Your device is likely a South Korean carrier model (KT, SKT, LGU+) or mainland China/Hong Kong variant — no eSIM hardware. Go to Settings → About phone → Model number to confirm. Korean model numbers typically start with SM-S9xx_ followed by a KT/SKT/LGU+ identifier.

"Add eSIM" option missing on a global model: The phone may be carrier-locked. Contact your carrier to unlock, or check Settings → General Management → Device Information → IMEI status.

eSIM installed but no signal abroad: Go to SIM Manager and confirm Roamix is set as the preferred data SIM. Enable Data Roaming for the Roamix SIM. Toggle Airplane Mode on/off.

eSIM Transfer fails when upgrading to new Samsung: eSIM Transfer in OneUI 7 requires both devices to be on OneUI 7 and for the eSIM profile to be transferable. Contact Roamix for a replacement QR code if the transfer fails.