Samsung Galaxy S21+ 5G 256GB eSIM: compatibility and setup

If you are checking whether Samsung Galaxy S21+ 5G 256GB can use an eSIM, the practical answer is: many regional versions support eSIM, but the storage size and product name alone do not confirm that your individual phone does. Samsung lists an eSIM option for the 256GB SM-G996B version sold in Austria, and its US support pages also document eSIM for selected carrier versions. Samsung notes that availability can vary with a device’s country of origin, model and carrier. Check the model number and the phone’s settings before choosing a travel plan.

That distinction matters if you bought the phone second-hand, imported it, or received it through a mobile operator. The “256GB” label describes storage capacity; it does not identify the exact regional hardware and software configuration. A phone can support 5G and still have eSIM unavailable on its particular market version or firmware. The checks below help you confirm the feature before you buy or install a plan.

Does Samsung Galaxy S21+ 5G 256GB support eSIM?

Samsung’s Austrian business listing for the Galaxy S21+ 5G 256GB, model family SM-G996B, specifies a SIM configuration of “SIM 1 + SIM 2 or eSIM.” This confirms that this regional 256GB configuration is designed to support eSIM. Samsung’s US support documentation also describes eSIM functions for supported Galaxy phones, including adding a profile by QR code. These official records do not prove that every phone sold under the same broad name has the feature enabled.

Treat the model code printed in Settings → About phone as more useful than the shop title. Samsung Galaxy S21+ 5G devices may have model identifiers beginning with SM-G996, followed by letters or additional characters that identify a sales configuration. The 256GB model sold in one market may not have the same SIM setup as a device with the same storage sold elsewhere. Carrier firmware, later software changes, or restrictions on an operator-branded phone may also affect the available menus.

Check your exact phone before buying a plan

Run these checks while connected to Wi-Fi. They do not install or activate anything, and they help separate device capability from plan or network issues.

1. Find the model number and sales origin

Open Settings → About phone and note the model number. Compare it with the label on the box or purchase record if available. Look for a complete identifier, not just “Galaxy S21+.” If it is a carrier-branded or imported phone, ask the original seller or carrier which market version it is and whether its eSIM functions are enabled. Avoid posting the full serial number or IMEI publicly; the model code is normally enough for a compatibility conversation.

2. Look for an EID

An EID is an identifier associated with a device’s embedded SIM capability. On Samsung phones, check Settings → About phone → Status information (the exact wording may differ by software version). Some software versions also show EID under Settings → About phone. You can open the phone dialler and enter *#06# to display device identifiers; if the handset supports eSIM, an EID may appear alongside the IMEI numbers. You do not need to place a call.

An EID is a useful sign, but do not treat a screenshot or an identifier alone as a guarantee that a particular plan will work. Continue with the menu check and confirm plan and carrier requirements. If no EID appears, update the phone’s software, restart it, and check the model with Samsung or the seller before proceeding.

Use this quick checklist before checkout:

• [ ] The complete model number and market version are known.
• [ ] An EID is visible and SIM manager shows Add eSIM.
• [ ] The phone is carrier-unlocked and can use another provider’s profile.
• [ ] The plan covers the destination and route, with suitable data and validity terms.
• [ ] You can use Wi-Fi and sign in to the plan account during setup.

3. Check SIM manager

Open Settings → Connections → SIM manager. On an eSIM-enabled configuration, look for Add eSIM or a similar option. Menu labels can change across One UI versions and markets. If you see only physical SIM controls and no add option, that is a reason to pause and verify the model and software—not proof by itself that the entire S21+ family lacks eSIM.

If both an EID and Add eSIM are present, your phone appears ready to add an eSIM profile. The plan still needs to support the destination and your handset must be carrier-unlocked if it is restricted. If either check is missing, contact Samsung or the original carrier with the full model number before purchasing a plan.

What regional and carrier differences mean

“Samsung Galaxy S21+ 5G 256GB” is a retail description, not a complete technical identifier. The SM-G996 family includes market and carrier configurations. Samsung’s own product records show the eSIM option for a 256GB SM-G996B variant in Austria; its US support pages separately show eSIM capability for supported carrier versions. At the same time, Samsung’s general guidance says that eSIM support can depend on the phone’s country of origin, and that carrier support is required to activate a profile.

A country’s general eSIM status is not the same as the status of your exact device or operator. A country may have local networks that support eSIM while a particular imported handset has the feature disabled; conversely, an eSIM-capable device may be unable to activate a plan from an operator that does not support it. Check the phone, the plan conditions and the carrier restrictions as separate items.

Check your device compatibility before selecting a plan. This device-level check is especially useful for imported or refurbished phones, where the listing may omit the model code or original carrier.

How to install and activate an eSIM

Samsung’s general route is Settings → Connections → SIM manager → Add eSIM → Scan QR code. Menu names may vary slightly with software version. If the provider gives you a manual activation code or in-app installation option, use that provider’s instructions instead of trying to reuse an already scanned QR code.

Step-by-step setup

1. Check the plan instructions. Confirm the destination, supported device requirements, when the validity period begins, and whether the profile should be installed before departure or after arrival.
2. Connect to reliable Wi-Fi. Keep the phone online until the profile download and setup finish. Do not start installation if you cannot complete the steps or reach the activation instructions.
3. Open SIM manager. Go to Settings → Connections → SIM manager and tap Add eSIM.
4. Choose the installation method. Select Scan QR code if that is how the plan is delivered. Point the camera at the code and follow the prompts. If the provider offers direct installation, use its official flow.
5. Wait for the profile to download. Keep the phone connected and avoid closing the setup screen. If prompted, confirm the download and restart the phone to apply the profile.
6. Name the new line. Choose a clear label such as “Travel data” so you can distinguish it from your everyday SIM. Naming does not change the plan.
7. Choose when to use it. 8. Set the mobile data line. In Settings → Connections → SIM manager, select the travel eSIM for mobile data when you are ready to use it. Keep your regular SIM selected for calls or texts if you need it and your normal carrier allows that arrangement.
8. Review data roaming for the travel profile. Enable roaming for that eSIM only if the plan instructions require it. This setting controls how the profile connects while travelling; it does not change the terms of your home SIM.
9. Wait for registration. After arrival, give the phone a few minutes to connect. If it does not, toggle airplane mode once or restart the handset, then recheck the network and data-line settings.

For Samsung’s Android steps, see the Android eSIM installation instructions. If you are helping someone with an iPhone instead, use the iOS eSIM installation instructions. These are separate platform guides; the iOS steps do not apply to the Galaxy S21+.

Using the eSIM for mobile data on a trip

Once the profile is installed and the plan is active, set the travel eSIM as the mobile data line when you reach the destination. The phone can keep a physical SIM enabled for other purposes where the device, plan and home carrier permit it. Review Samsung’s SIM manager settings carefully: choose which SIM handles mobile data, calls and messages, and check any prompt about switching data automatically. Disable automatic switching if you want to avoid unintended data use on your regular line.

A travel data plan is generally intended for internet access. Do not assume it includes a regular phone number, cellular voice calls or SMS unless its own terms say so. You can usually use messaging and calling apps over data, subject to the app, plan and local rules. Keep access to account verification methods in mind before disabling your home SIM, especially if banks or services send one-time codes to your regular number.

For a multi-country itinerary, check whether the plan covers every country on the route. A country-specific plan may stop working when you cross a border; a regional plan may be more suitable if its listed destinations match your itinerary. Check the plan’s data allowance, validity period, activation trigger, supported network selection and any tethering restrictions before paying. Conditions can differ even between plans for the same destination.

Three practical travel scenarios

• Short city break: install the profile over Wi-Fi before leaving if the plan allows it, then choose it for mobile data after landing. Keep your main SIM available for calls or account verification if its roaming settings are understood.
• Several countries: verify that each stop is listed in the plan. If not, compare a regional option or separate country plans, and confirm which profile should be used at each border.
• Work trip: check whether the plan permits tethering before relying on the phone as a hotspot. Keep meeting links, maps and account access available, and monitor usage in the provider’s app or account.

Kaspersky eSIM Store is an app and website where travellers can choose, arrange and activate an eSIM with a suitable mobile-data plan for an international trip. It helps you review options for a destination and manage the eSIM journey; it is not a mobile operator or the owner of the network. You remain subject to the terms of the selected plan and the local network it uses.

If your phone has not passed the EID and SIM manager checks, do not assume that a purchase will make eSIM available. Ask Samsung or the phone’s original carrier to verify the exact model and firmware, or use a compatible unlocked phone for the trip. You can also compare the cost and conditions of your home carrier’s roaming service or a local physical SIM option before deciding.

Troubleshooting common eSIM issues

“Add eSIM” is missing

Restart the phone, install available software updates, and check SIM manager again. Confirm the complete model code and sales market. If the EID is also absent, ask Samsung or the original carrier whether that particular configuration supports eSIM. Do not attempt to install a profile through a workaround or an untrusted app.

The QR code will not scan

Increase screen brightness on the device showing the code, clean the Galaxy camera lens, and position the code flat within the scan frame. If the code is on the same phone, use the provider’s manual entry or direct installation method if one is offered. A QR code that has already been used, expired, or issued for another device may not work; ask the plan provider to check its status before requesting a replacement.

The profile downloads but does not connect

First confirm that the plan’s service period has started and that you are in a covered destination. In SIM manager, make sure the travel profile is switched on and selected for mobile data. Review the plan’s roaming instructions, then check that airplane mode is off. If the phone shows a network but pages do not load, verify the plan’s data allowance and any provider-supplied access-point settings.

There is no signal after arrival

Wait briefly, then toggle airplane mode off and on or restart the device. Check that the eSIM is enabled and the selected data line is correct. If network selection is available, follow the provider’s guidance about automatic or manual selection. Coverage and service depend on the local network and location; moving to an area with a clearer signal may help. If the problem continues, contact the plan provider with the phone model, destination and exact error message.

Mobile data is using the wrong SIM

Open Settings → Connections → SIM manager and verify the mobile data selection. Turn off automatic data switching if you do not want the phone to fall back to your home SIM. Review your home carrier’s roaming policy separately, since that line can incur charges according to its own terms.

The phone is carrier-locked

A locked phone may reject an eSIM profile from another provider. Contact the original carrier and ask whether the handset can be unlocked and what requirements apply. An unlocked status is independent of whether the phone has eSIM hardware; both conditions need to be satisfied.

The profile disappeared or activation failed

Do not erase the profile until support advises you to do so. Some QR codes cannot be reused after installation. Take a screenshot or note the error, check that Wi-Fi is stable, and contact the plan provider. If the phone itself does not offer eSIM controls, confirm the hardware and regional configuration with Samsung or the seller.

Frequently asked questions

Is eSIM supported on Samsung Galaxy S21+ 5G 256GB?

Samsung lists eSIM for a 256GB SM-G996B configuration, so some Samsung Galaxy S21+ 5G 256GB versions support it. The retail name does not identify every regional or carrier variant. Check your exact model number, EID and Add eSIM menu before buying a plan.

Does 5G mean the phone supports eSIM?

No. 5G describes mobile network capability; it does not confirm that eSIM is available on your particular regional version. Check SIM manager and EID independently.

Can I use an eSIM and a physical SIM together?

The phone’s SIM manager supports managing SIM profiles, but the available combinations and simultaneous use depend on the exact model and software. Check which line is assigned to mobile data, calls and messages, and follow the travel plan’s instructions.

Do I need to remove my physical SIM to add eSIM?

Usually, adding a digital profile does not require removing a physical SIM. Whether both can remain active at once depends on the device configuration and carrier. Use SIM manager to choose the active lines and avoid unplanned mobile data on your home SIM.

Will a travel eSIM give me a phone number?

Not necessarily. A travel eSIM plan may be for mobile data only. Check its terms for voice, SMS and number availability; use internet-based calling or messaging apps when appropriate.

Should I install the eSIM before travelling?

That depends on the plan’s instructions and activation rules. Many profiles can be installed over Wi-Fi before departure, but the validity period may begin at installation, first network connection or another defined event. Check the specific plan before installing.

What if my Galaxy has no EID?

Update and restart the phone, then check About phone and SIM manager again. If EID and Add eSIM are both absent, ask Samsung or the original carrier to verify your complete model code and market version before purchasing an eSIM plan.

Final check before choosing an eSIM

For Samsung Galaxy S21+ 5G 256GB, eSIM support is verified for Samsung’s listed 256GB SM-G996B configuration, but the exact handset still matters. Confirm the full model code, look for an EID, and open Settings → Connections → SIM manager to find Add eSIM. Check that the phone is unlocked and that the plan covers your destination, route and intended dates.

When those checks are complete, Kaspersky eSIM Store can help you choose, arrange and activate an eSIM plan for mobile data during an international trip. Review the plan’s coverage destinations, data allowance, validity and activation rules before selecting it. If your handset does not show eSIM support, verify its regional version with Samsung or the original carrier, then consider roaming or a compatible unlocked device as alternatives.

Browse Kaspersky eSIM Store to check current travel plan options for your destination. This is the general store homepage; check the destination and plan details shown there before choosing.