[vc_row][vc_column][vc_column_text css=””]Samsung’s Galaxy S25 lineup, the S25, S25+, and S25 Ultra, all support eSIM technology alongside a traditional nano SIM slot. The S25 Ultra goes further with dual eSIM support, letting you run two eSIMs simultaneously without a physical card.
This guide walks through every step to activate an eSIM on your Galaxy S25 series, using Numero as the example provider. The steps work with any eSIM provider.
Before You Start
- Software: Ensure your Galaxy S25 runs One UI 7 or later (Settings → Software Update).
- Wi-Fi: Connect to a stable network, eSIM activation requires internet.
- QR code ready: Have your eSIM provider’s QR code or activation code. Numero provides this in the app and via email.
- Carrier lock: Carrier-locked devices may block third-party eSIM activation. Unlocked devices have no issue.
Galaxy S25 eSIM Compatibility at a Glance
| Model | Physical SIM | eSIM Support | Dual eSIM |
|---|---|---|---|
| Galaxy S25 | 1x Nano SIM | Yes (1 eSIM) | No |
| Galaxy S25+ | 1x Nano SIM | Yes (1 eSIM) | No |
| Galaxy S25 Ultra | 1x Nano SIM | Yes (2 eSIMs) | Yes |
All three models support dual connectivity, one physical SIM and one eSIM at the same time. The S25 Ultra additionally supports two eSIMs, ideal for travelers who want separate data and voice lines.
Method 1: QR Code Installation
- Open Settings on your Galaxy S25 series.
- Tap Connections → SIM Manager.
- Tap Add eSIM → Scan QR Code.
- Point your camera at the QR code from your eSIM provider (e.g., Numero).
- Confirm the plan details on screen.
- Wait for the profile to download, typically 30 seconds to 2 minutes.
- The new eSIM appears in SIM Manager alongside your physical SIM.
If the process stalls, restart your device and retry on a faster Wi-Fi connection.
Method 2: Direct Install from the Numero App
- Open the Numero app on your Galaxy S25.
- Purchase your preferred eSIM plan (data eSIM or Full eSIM).
- Tap Install – Samsung’s built-in eSIM manager handles the rest automatically.
This method skips QR scanning since the app communicates directly with your device’s eSIM manager.
Method 3: Manual Activation Code Entry
Useful when the QR code was sent via email and you are viewing it on the same device.
- Go to Settings → Connections → SIM Manager → Add eSIM.
- Select Enter Activation Code.
- Paste or type the code from your provider.
- Confirm and wait for the profile to install.
After Installation: Configuring Your Lines
Once your eSIM is active, you need to tell your phone how to use it. This is where Samsung’s SIM Manager becomes particularly useful.
- Label your plan: Tap the newly installed eSIM in SIM Manager and rename it, something like “Numero Travel” or “UK Data” makes it easy to identify.
- Set preferred SIM for data: If you want all internet traffic to go through your Numero eSIM, set it as the default data line.
- Set preferred SIM for calls: Keep your physical SIM as the default for voice calls if you want to remain reachable on your primary number.
- Enable data roaming: If you are using the eSIM for international travel, whether from the UAE or from Saudi Arabia, toggle on data roaming for the eSIM line specifically.
Galaxy-Specific Tip: Per-App Data Rules
Samsung’s SIM Manager allows you to assign data rules per app. This means you can route streaming apps through your eSIM data plan while keeping messaging apps on your physical SIM’s data. It is a feature unique to Samsung that gives you more control over how each SIM is used, especially handy when roaming with one line and staying local on the other.
Troubleshooting Common Issues
“eSIM option not showing in SIM Manager”
This usually means the device is carrier-locked. Contact your carrier to confirm eSIM support is enabled, or check if your device needs an unlock.
“Activation server error” during installation
Retry on a more stable Wi-Fi connection. Avoid using mobile data for the initial eSIM download. If the issue persists, restart your device and try again.
“No signal after eSIM installation”
Toggle Airplane Mode on and off. This forces the device to reconnect to available networks. If the eSIM is for travel, signal will only appear once you arrive at the destination country, this is expected for travel eSIM plans whether heading from the UAE to the UK or from Saudi Arabia to Turkey.
“Cannot use two eSIMs on my Galaxy S25”
Dual eSIM is only available on the Galaxy S25 Ultra. The standard S25 and S25+ support one eSIM plus one physical SIM.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_empty_space][/vc_column][/vc_row][vc_row][vc_column][vc_column_text css=””]
Frequently Asked Questions
[/vc_column_text][vc_toggle title=”Can I switch between eSIM profiles without deleting them?” css=””]Yes. Samsung’s SIM Manager lets you enable or disable individual eSIM profiles. You can keep multiple profiles installed and switch between them as needed.[/vc_toggle][vc_toggle title=”Will my Galaxy S25 work with eSIM outside my country?” css=””]Yes. eSIM functionality is hardware-based and works globally. However, carrier-locked devices may have restrictions, unlocked devices offer the most flexibility.[/vc_toggle][vc_toggle title=”Can I transfer my eSIM to a new phone?” css=””]eSIM profiles generally cannot be transferred directly between devices. You will need to deactivate the profile on your old device and reinstall it on your new one using the original QR code or activation details.[/vc_toggle][/vc_column][/vc_row][vc_row][vc_column][vc_empty_space][/vc_column][/vc_row][vc_row][vc_column][vc_column_text css=””]
Conclusion
Activating an eSIM on the Galaxy S25 series takes minutes. Samsung’s SIM Manager gives you fine-grained control over your lines, and the S25 Ultra’s dual eSIM support adds flexibility for travelers and professionals. Heading abroad? Set up a travel eSIM before your trip and land connected.[/vc_column_text][/vc_column][/vc_row]
