Samsung Galaxy S24 Ultra 128GB eSIM: compatibility and setup

If you are preparing a trip and want to know whether the Samsung Galaxy S24 Ultra 128GB can use an eSIM, the short answer is: the Galaxy S24 Ultra family supports eSIM according to Samsung’s current support information, but the handset still needs to be checked. eSIM availability can depend on the country where the phone was sold, the operator, the model code and the installed software. The storage label alone is not enough to confirm compatibility.

There is an important detail in the name Samsung Galaxy S24 Ultra 128GB. Samsung’s official comparison of the Galaxy S24 models lists the S24 Ultra with 256GB or 512GB of storage and 12GB of RAM, or 1TB with 12GB of RAM. It does not list a 128GB S24 Ultra configuration on that page. The 128GB description may be a retailer catalogue label, a refurbished-device description, a mixed listing or a mistake that refers to another Galaxy S24 model. Keep the exact name when checking the listing, but confirm the actual phone’s model number and eSIM menu before buying a plan.

For a genuine Galaxy S24 Ultra handset with an enabled eSIM module, the practical answer is yes: you can add a compatible mobile plan, often alongside a physical nano-SIM. For the particular phone called Samsung Galaxy S24 Ultra 128GB, treat support as confirmed only when the device shows an EID and an Add eSIM option, and when the eSIM plan is available for your market and operator.

The direct answer: does Samsung Galaxy S24 Ultra 128GB support eSIM?

Samsung’s Galaxy S24 Series support guide says that a Galaxy S24 Series phone includes an eSIM and explains how to activate it. Samsung’s current Galaxy eSIM support page also lists Galaxy S24, S24+ and S24 Ultra among supported device families. These are manufacturer-level indications that the Galaxy S24 Ultra platform is designed for eSIM.

Samsung also warns that eSIM service may vary by country and carrier. An imported phone may have a different SIM tray, firmware configuration or activation path from a device sold locally. A carrier-locked, refurbished or repaired phone can have additional restrictions. The most accurate conclusion for this exact listing is:

Samsung Galaxy S24 Ultra 128GB is potentially eSIM-compatible because the Galaxy S24 Ultra family supports eSIM, but the 128GB label is not confirmed as an official S24 Ultra storage option by Samsung’s current US model comparison. Verify the model number, EID and Add eSIM menu on the actual device before purchase.

If those checks succeed, storage capacity does not prevent eSIM use. eSIM data is stored in the phone’s embedded SIM component, not in the space used for photos or apps. If the checks fail, do not rely on the product title alone. Ask the seller to confirm the market version before paying for a travel plan.

What the exact device name tells you

The name contains both model information and a storage label:

The 128GB wording should not be silently replaced with “Galaxy S24 Ultra” in a compatibility request. At the same time, it should not be treated as proof of a standard Samsung retail configuration. Open Settings → About phone and compare the model name, model number and software details with the seller’s listing. A genuine S24 Ultra model number commonly belongs to the SM-S928 family, but the complete code and market suffix matter more than a partial match.

Do not confuse the Galaxy S24, Galaxy S24+ and Galaxy S24 Ultra. Their names and storage options differ. A listing that combines an S24 Ultra name with a storage value normally associated with another model deserves a careful check. A similar screen or camera is not proof that the phone has the required eSIM hardware.

eSIM, physical SIM and mobile data

An eSIM is a digital SIM profile stored in an embedded component of the phone. It lets you activate a mobile plan without inserting another plastic card. The plan still comes from the relevant mobile service provider; the phone stores and uses the profile. A travel eSIM is usually intended for mobile internet in the destination country or region.

Regional S24 Ultra specifications show nano-SIM and embedded-SIM configurations, including combinations such as SIM 1 + eSIM. The exact combinations and number of simultaneously active lines can vary by market and software. Samsung also notes that menus and available services may vary by model and software version.

In a typical travel setup, your regular physical SIM remains available for calls or incoming messages, while the travel eSIM is selected for mobile data. This does not turn a data-only eSIM into a second ordinary phone number. Kaspersky eSIM Store is an app and website that helps you choose, arrange and activate an eSIM with a suitable mobile-internet plan for a foreign trip. Unless the selected plan says otherwise, it does not include a separate telephone number, ordinary voice calls or SMS. Internet calls and messages in supported messengers use the data connection.

Regional, operator and software differences

The Galaxy S24 Ultra name identifies a model family, not every detail of a particular sales unit.

Country of origin. Samsung explicitly says that an eSIM may not be supported even when a device family appears in its supported list, depending on the country of origin. An imported version may expose different menus or SIM combinations.

Operator support. The provider must support eSIM activation for that model and market. An Add eSIM button proves that the phone has an eSIM function, but it does not prove that every provider or travel plan will work. Activation may use a QR code, automatic download or a manual activation code.

Operator lock. A carrier-locked phone may reject a plan from another provider. Dual-SIM capability is not the same as an unlocked device. Check the original contract or ask the seller before travelling.

Firmware. Samsung’s current menu path is Settings → Connections → SIM manager → Add eSIM, but translations and older versions may use SIM card manager or Add mobile plan. A repair or motherboard replacement may also change the relationship between the model information and the EID.

What to check before buying an eSIM plan

Use this checklist on the actual Samsung Galaxy S24 Ultra 128GB before selecting or paying for a plan:

• Confirm that About phone identifies the device as Galaxy S24 Ultra, not Galaxy S24 or Galaxy S24+.
• Record the complete model number and sales region.
• Look for an EID in Settings → About phone → Status or Settings → About phone → EID.
• Open Settings → Connections → SIM manager and look for Add eSIM or Add mobile plan.
• Check that the phone is not restricted to its original operator.
• Install pending system updates while Wi-Fi is available.
• Confirm that the plan covers the country, region or route of your trip.
• Read the data allowance, validity period, activation conditions and hotspot rules.
• Keep the QR code or activation details available on a second screen.
• Check your regular SIM’s roaming settings so it does not unexpectedly use paid data abroad.

You can Check your device before ordering. This is especially important when a shop advertises Samsung Galaxy S24 Ultra 128GB without a complete model number. If the seller cannot provide a clear answer, postpone the purchase until the handset is verified.

How to verify the EID and eSIM menu

Samsung says the EID can be found on the box or in the phone’s settings. Open Settings → About phone → Status (or Status information) and look for EID. Then open Settings → Connections → SIM manager and look for Add eSIM. Use the EID, menu and market information together. If the EID is present but the menu is absent, update and restart the phone, then check again; a regional configuration or operator firmware may not expose the feature. Do not publish the EID or QR code publicly.

How to install and activate an eSIM

Before starting, connect the Samsung Galaxy S24 Ultra 128GB to Wi-Fi. Keep the QR code on another screen or on paper and confirm the plan covers your destination.

1. Open the SIM manager

Go to Settings → Connections → SIM manager and tap Add eSIM. If your interface uses another translation, look for Add mobile plan.

2. Choose the activation method

For a QR code, tap Scan QR code. For automatic assignment, let the phone search for the mobile plan. If a code was supplied, choose manual activation and enter it exactly.

3. Download the profile

Review the plan name and follow the prompts while staying connected.

4. Name and select the line

Label the line Travel data or with the destination name. Select it as the preferred SIM for mobile data and keep your regular line for calls or messages if needed.

5. Set data roaming carefully

Some travel eSIMs require Data roaming on the travel line. Follow the plan’s instructions and check the line name first to avoid enabling roaming on the wrong line.

6. Wait for registration

Allow a few minutes for registration. See the Android installation instructions or the iOS installation instructions.

Using Samsung Galaxy S24 Ultra 128GB for mobile internet abroad

When you reach the destination, open Settings → Connections → SIM manager and confirm that the travel eSIM is enabled and selected for mobile data. Check Mobile networks and enable data roaming for that eSIM if required. Turn Wi-Fi off briefly to test the mobile connection.

Use Data usage to see which line consumes data. Navigation, photo backup, video calls, streaming and updates can use a package quickly. Limit background data and automatic updates where appropriate; the allowance and validity still follow the plan’s conditions.

Scenario 1: prepare before departure

Verify the EID and Add eSIM, connect to Wi-Fi, download the profile and label it Travel data. If validity starts on first network use, leave the line disabled until the trip. On arrival, enable it and test a simple web page.

Scenario 2: activate after landing

Keep the QR code or activation details accessible offline. Use airport Wi-Fi to install the profile, then select the eSIM for mobile data. Kaspersky eSIM Store helps with preparation before departure or activation after arrival, depending on the plan.

Common problems and checks

The QR code will not scan

Increase the brightness, clean the camera lens and show the whole code. Use another screen if the code is on the phone itself. If available, use manual activation and do not repeatedly scan a single-use code.

Add eSIM is missing

Check the full model name, model number, EID and country of origin. Update and restart the phone. If the EID is missing too, the handset may be a different model, region-limited or misdescribed. Confirm it before buying a plan.

The profile downloads but there is no service

Confirm that the eSIM is on and selected for mobile data. Check the destination, validity, operator lock and roaming requirement. Toggle airplane mode, then restart if necessary. Enter APN settings only when the provider supplies them.

FAQ

Is Samsung Galaxy S24 Ultra 128GB eSIM-compatible?

The Galaxy S24 Ultra family is listed by Samsung as supporting eSIM, and Samsung’s S24 Series guide describes activation. For the exact Samsung Galaxy S24 Ultra 128GB listing, confirm the model number, EID and Add eSIM menu because Samsung’s current US comparison does not list a 128GB S24 Ultra configuration. Country, operator and firmware can change the result.

Is Kaspersky eSIM Store a mobile operator?

No. Kaspersky eSIM Store is an app and website that helps you choose, arrange and activate an eSIM with a suitable tariff for mobile internet during a foreign trip. It is not the operator, owner of the network or provider of mobile coverage. Access depends on the selected plan, relevant mobile providers and destination.

Summary

Samsung’s current official information supports eSIM on the Galaxy S24 Ultra family, with the setup path Settings → Connections → SIM manager → Add eSIM. The exact Samsung Galaxy S24 Ultra 128GB listing needs care because Samsung’s current US comparison lists the Ultra in 256GB, 512GB and 1TB configurations rather than 128GB. Verify the handset’s model number, EID, market, operator lock and plan conditions before selecting the travel eSIM for data.

Final device check before choosing an eSIM for your trip

Complete this sequence immediately before purchase:

1. Confirm that the phone identifies as Samsung Galaxy S24 Ultra and record its full model code.
2. Find the EID in About phone → Status and confirm that SIM manager → Add eSIM is visible.
3. Check that the phone is unlocked and that its market version is eligible for eSIM service.
4. Select the country, region or route in Kaspersky eSIM Store and read the tariff’s data, validity and activation conditions.
5. Arrange the eSIM through the app or website, install it over Wi-Fi and keep the QR code or activation details secure.
6. Before using mobile data abroad, select the travel eSIM as the data line and verify roaming for that line.

Kaspersky eSIM Store can then help you choose, arrange and activate an eSIM plan for mobile internet in your trip. Recheck compatibility and plan conditions whenever the device or destination changes.