For most users, we recommend QR code installation—it's fast (2-3 minutes), reliable, and works whether you use the eSIMfo app or web dashboard. If you want the absolute fastest method and have the eSIMfo mobile app installed, choose direct installation (under 90 seconds). Use manual installation only when QR code scanning isn't available, such as when your camera isn't working or you can't display a QR code on another device.

Yes! Most modern Samsung Galaxy devices support multiple eSIM profiles installed simultaneously. However, you can typically only have one eSIM active at a time for data (dual SIM functionality with one physical SIM + one active eSIM). You can switch between installed eSIMs in Settings → Connections → SIM manager without reinstalling them. This is perfect for travelers who need different eSIMs for different countries—install them all before your trip and switch as needed.

No, you don't need to remove your physical SIM. Samsung Galaxy devices support dual SIM functionality, allowing you to use your physical SIM and eSIM simultaneously. Typically, you'll keep your home SIM active for calls and texts, while using the eSIMfo eSIM for mobile data when traveling. You can configure which SIM to use for calls, texts, and data in Settings → Connections → SIM manager. This lets you stay reachable on your home number while avoiding expensive roaming charges.

If your eSIM doesn't appear after installation, try these steps: (1) Restart your Samsung Galaxy device completely, (2) Verify the eSIM is enabled in Settings → Connections → SIM manager—toggle it ON if needed, (3) Check that you selected the correct eSIM for mobile data, (4) Ensure data roaming is configured correctly per your plan's instructions, and (5) Confirm you're in a coverage area for your eSIMfo plan. If issues persist, delete the eSIM and reinstall using a different method, or contact eSIMfo support.

Switching your data line on Samsung Galaxy is easy: (1) Open Settings → Connections → SIM manager, (2) Tap "Mobile data" or "Data plan", (3) Select which SIM you want to use for data (physical SIM or eSIM), (4) The change takes effect immediately. You can also access this quickly by swiping down from the top of your screen, long-pressing the mobile data icon, and selecting your preferred SIM. This is useful when you want to switch between your home plan and travel eSIM.

No, installing an eSIM does not void your Samsung warranty. eSIM technology is a standard feature built into modern Samsung Galaxy devices, and using it as intended (including installing third-party eSIMs like eSIMfo) is completely supported by Samsung. Installing and using eSIMs is no different from inserting a physical SIM card from any carrier. Your device warranty remains fully intact when using eSIM functionality.