The Samsung Galaxy S21 series marked a significant step forward in mobile connectivity, refining the eSIM capabilities introduced in previous generations. For users of the Galaxy S21, S21+, S21 Ultra, and the popular S21 FE, understanding how to leverage this technology can unlock a new level of flexibility, whether you are managing two numbers on one device or looking for affordable data options while traveling abroad.
This guide cuts through the confusion surrounding eSIM on the Galaxy S21 series. We will cover exact model compatibility, how to set up Dual SIM functionality, which US carriers support the technology, and how to use a travel eSIM to avoid roaming charges.
Does the Samsung Galaxy S21 support eSIM?
Yes, the Samsung Galaxy S21 series supports eSIM technology.
Most models in the S21 lineup come equipped with a built-in eSIM (embedded SIM) alongside a standard physical Nano-SIM card slot. This allows you to download a digital carrier plan without inserting a plastic card. It also enables Dual SIM functionality, meaning you can have two active phone numbers (e.g., one for work and one for personal use) on a single device.
However, compatibility can vary slightly depending on your specific model variation and where it was purchased.
Samsung Galaxy S21 eSIM Compatibility (S21, S21+, S21 Ultra, S21 FE)
Before purchasing an eSIM plan, it is crucial to verify that your specific device supports the feature. While the flagship models are generally compatible, the “Fan Edition” (FE) and regional variants have specific limitations.
| Model | eSIM Support | Dual SIM Capability |
| Galaxy S21 5G | Yes (Global & US versions) | Nano-SIM + eSIM |
| Galaxy S21+ 5G | Yes (Global & US versions) | Nano-SIM + eSIM |
| Galaxy S21 Ultra 5G | Yes (Global & US versions) | Nano-SIM + eSIM |
| Galaxy S21 FE 5G | Varies (Most European/Global: Yes. Some US/Asian: No) | Nano-SIM + eSIM (where supported) |
Important Restrictions:
- China, Hong Kong, and Macau: Galaxy S21 devices manufactured for these markets typically do not support eSIM. Instead, they often feature a dual physical SIM slot.
- Carrier Locks: If your device is locked to a specific carrier, you cannot use an eSIM from a different provider (like a travel eSIM) until the phone is officially unlocked.
How Many eSIMs Can the Galaxy S21 Store?
The Samsung Galaxy S21 allows you to store multiple eSIM profiles on the device, typically between 5 to 7 profiles, depending on the file sizes. This is excellent for frequent travelers who want to save different profiles for different countries.
Note: You can only have one eSIM active at a time. You generally cannot use two eSIMs simultaneously (Dual eSIM) on the S21 series; you must use one physical SIM and one eSIM to achieve Dual SIM functionality.
How to Set Up and Activate an eSIM on Samsung Galaxy S21
Activating an eSIM on your Galaxy S21 is a straightforward process that can be done in your settings.
Method 1: Scanning a QR Code
- Go to Settings > Connections > SIM card manager.
- Tap Add mobile plan or Add eSIM.
- Select Scan carrier QR code.
- Scan the code provided by your carrier or eSIM provider.
- Follow the on-screen prompts to download and install the profile.
Method 2: Manual Entry
If you cannot scan a QR code (for example, if the code is on the same screen you are using), you can enter the details manually.
- On the QR code scanning screen, tap Enter activation code.
- Input the SM-DP+ Address and Activation Code provided by your carrier.
- Tap Connect to install the plan.
Why choose Orange Travel eSIM for Samsung Galaxy S21
If you are planning a trip abroad, using your primary carrier’s roaming plan can be incredibly expensive. This is where Orange Travel offers a superior alternative.
Does Orange Travel offer eSIMs for the Galaxy S21?
Yes. Because the Galaxy S21, S21+, and S21 Ultra are fully eSIM compatible, they work perfectly with Orange Travel’s prepaid data plans.
How to Get and Activate:
- Purchase: Visit travel.orange.com and select a plan for your destination (Europe, Asia, Global, etc.).
- Receive: You will receive a QR code via email instantly.
- Activate: Scan the QR code in your S21 settings (as described above) before your trip or upon arrival.
- Roam: Ensure Data Roaming is turned ON for the Orange eSIM line to start using data immediately.
Pro-Tip: Use the Orange Travel App for “1-click activation,” which bypasses the need for a QR code entirely!
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Troubleshooting eSIM Issues on Galaxy S21
If you encounter problems activating or using your eSIM, try these steps:
- “SIM not supported” error: This usually means your phone is carrier-locked. Contact your original provider to unlock the device.
- No Internet connection: Ensure that your eSIM is selected as the primary source for Mobile Data in the “SIM card manager” and that Data Roaming is toggled ON for the eSIM profile.
- QR Code not working: Check that you have a stable Wi-Fi connection during setup. An internet connection is required to download the eSIM profile.
Frequently Asked Questions (FAQs)
Can I use two eSIMs at the same time on my Galaxy S21?
No, the S21 series supports “Dual SIM Standby” with one physical SIM and one eSIM. While you can store multiple profiles, only one eSIM can be active at a time.
Does the S21 FE support eSIM?
It depends. Most global versions support it, but some US carrier models or older firmware versions may not. Check your SIM card manager settings to verify.
Will using an eSIM drain my battery faster?
No, an eSIM consumes the same amount of battery as a physical SIM. However, searching for signal in poor coverage areas will drain battery regardless of SIM type.
Can I use WhatsApp with an Orange Travel eSIM?
Yes! You can use your Orange Travel data for WhatsApp, FaceTime, and Maps. Your WhatsApp account will remain linked to your original phone number.
Conclusion
The Samsung Galaxy S21 series offers powerful eSIM technology that gives travelers freedom from high roaming costs. By using an Orange Travel eSIM, you get the security of a global leader and the convenience of instant activation.
