Samsung Galaxy Note 20 Ultra 5G 128GB eSIM: compatibility and setup

Short answer: the Galaxy Note20 Ultra family supports eSIM in some markets, but the exact capability of a Samsung Galaxy Note 20 Ultra 5G 128GB cannot be confirmed from its storage capacity or retail name alone. Samsung’s Australian compatibility guidance includes the Note20 Ultra for Australian variants. Samsung also cautions that eSIM availability depends on the exact model, region, and carrier. Check the model number and the eSIM controls on your own phone before choosing a travel plan.

The model code identifies the hardware and sales market more precisely than the product name. Software and carrier restrictions can affect what you can activate, so verify your own phone before arranging an eSIM.

Does the Samsung Galaxy Note 20 Ultra 5G 128GB support eSIM?

Sometimes, depending on the specific regional model. Samsung’s current Australian support list names Galaxy Note20 and Note20 Ultra among eSIM-capable Galaxy phones, and Samsung’s Australian setup guidance describes eSIM activation for compatible Galaxy models. This is evidence that the Note20 Ultra family has eSIM support in that market. It is not a guarantee that every phone sold as “Samsung Galaxy Note 20 Ultra 5G 128GB” has an enabled eSIM.

The 128GB part identifies storage capacity, not the sales region or radio configuration. A phone imported from another country may use a different model code, firmware, or carrier configuration than a similarly named local version. A carrier may also restrict which SIM profiles the phone accepts. The 5G label does not establish eSIM capability by itself: 5G mobile service and an embedded SIM are separate device features.

If you are buying this phone second-hand or from an importer, ask for the complete model code and test the menus in person. Do not rely only on the product title, a listing that says “dual SIM,” the presence of a physical SIM tray, or another owner’s report about a different regional version.

Regional versions and carrier restrictions

Samsung sells Galaxy phones under related names across different countries. Model numbers can have suffixes or other market identifiers, and software menus can also differ by region and carrier. Samsung’s eSIM compatibility article is explicitly written for Australian variants; it names Note20 Ultra, but says settings and steps may vary. Samsung’s broader support guidance likewise warns that eSIM service can vary by country and carrier. Treat those statements as a reason to check the handset itself, not as evidence that a model sold elsewhere has the same configuration.

The country where you use a phone does not change the region variant it was built or sold for. Separately, the destination operator must support the profile. Check the phone variant, carrier lock, and destination plan as distinct requirements.

Before relying on eSIM, find the model number in Settings → About phone and compare it with Samsung’s specifications or support page for the country where that exact model was sold. If the phone came from a carrier, ask that carrier whether the device is unlocked and whether it allows a second eSIM or a travel eSIM. An eSIM menu cannot remove a network lock. The provider of the plan may also have its own device and destination requirements.

How to check eSIM support on your phone

Use both the settings menu and the device identifiers. The menu is the quickest practical test; the EID is a useful second clue. Names vary slightly by Android version, One UI version, and carrier software.

1. Find the model number. Open Settings → About phone. Note the full model code, not only the product name. Keep it available when contacting Samsung or the carrier.
2. Open SIM settings. Go to Settings → Connections → SIM manager. Look for Add eSIM, Add mobile plan, or a similarly named option. On some software versions, the add option appears only after you tap the SIM section.
3. Look for an EID. Open Settings → About phone → Status information and check for an EID entry. Depending on the software, the EID may be listed under SIM status or another status screen. Do not post the number publicly; it is a device identifier that support may ask you to provide privately.
4. Check the local Samsung specification. Search Samsung support for the complete model number and review the network or SIM specifications. For a Galaxy device, Samsung’s compatibility guide describes checking the SIM-size specification for “Embedded-SIM,” while noting that its guide is market-specific.
5. Confirm carrier status. Ask the carrier that sold or currently services the phone whether it is unlocked and whether the intended eSIM can be installed. Confirm that it can use the plan in the destination country.
6. Update before installation. If the phone appears compatible, connect to Wi-Fi and install available software updates before you travel. Then check again for the eSIM option.

An EID indicates that the phone reports an eSIM identity; an “Add eSIM” control indicates that its software offers a profile setup flow. Neither confirms that the phone is unlocked or that a particular plan will work. If both are missing, ask Samsung or the seller to verify the exact model before trying a QR code.

Check your device compatibility before selecting a plan. If the phone is not eSIM-capable or is locked, keep using a supported physical SIM, ask the original carrier about unlocking or eSIM eligibility, or use Wi-Fi where appropriate. Do not buy a plan on the assumption that the 128GB version is identical to another regional model.

What to check before choosing a travel eSIM

Complete these checks while you still have a reliable internet connection:

• Device support: confirm the model number, EID or eSIM menu, and local Samsung specifications.
• Network lock: verify that the phone can accept a profile from the provider whose plan you intend to use.
• Destination: check that the exact country or countries on your itinerary are included in the selected plan. A regional package may include only a defined set of destinations.
• Plan conditions: review data allowance, validity period, supported network, activation instructions, and any restrictions shown for that plan. Conditions can differ by package.
• Installation connection: have stable Wi-Fi or another internet connection available when downloading the profile. Keep the QR code or activation details accessible on a second screen or printed copy if needed.
• Existing SIM: decide which line should handle ordinary calls and texts, and which should use mobile data. A data-only travel eSIM may not include a standard phone number, voice calls, or SMS unless its plan terms expressly say otherwise.
• Timing: read when the plan validity begins. Installing a profile and starting data use are not always the same event; follow the selected plan’s activation instructions.
• Backup: save the provider’s setup details and support route before departure. Avoid deleting a working eSIM profile unless you know it can be installed again.

Kaspersky eSIM Store is an app and website where you can choose, arrange, and activate an eSIM plan for mobile data on an international trip. Review each plan’s destination and terms; service depends on the local provider and selected plan.

How to install an eSIM on the Samsung Galaxy Note 20 Ultra 5G 128GB

The phone must expose an eSIM setup option and be eligible for the selected profile. Keep the QR code or activation details ready. If the code is on this phone, display it on another device or use manual activation details.

1. Connect to Wi-Fi. Keep the phone online while it downloads the eSIM profile. If possible, complete installation before leaving home.
2. Open SIM manager. In Settings, tap Connections → SIM manager. The exact wording can vary by One UI version.
3. Start adding a plan. Tap Add eSIM or Add mobile plan. If the choice is absent after updating, stop and reconfirm the variant rather than proceeding as if the phone supports eSIM.
4. Choose a setup method. Select the option to scan a QR code, use an activation code, or download a plan if the provider offers that method. Follow the instructions supplied with your specific plan.
5. Scan or enter the details. Point the camera at the QR code or enter the activation information exactly as provided. Keep the screen on and the internet connection stable while the profile downloads.
6. Confirm the profile. Follow the on-screen prompts. Give the profile a recognizable label such as “Travel data” so it is easy to identify alongside your physical SIM.
7. Choose when to use it. If the trip has not started, leave the travel profile turned off if the plan instructions recommend waiting. Do not assume that disabling it pauses validity; check the plan’s terms.
8. Select mobile data. In SIM manager, choose the travel eSIM as the mobile-data line when you are ready to use it. Keep your normal SIM selected for calls or messages if that is your preference and the phone permits the arrangement.
9. Enable data roaming if instructed. Some travel eSIM plans require data roaming on the eSIM profile to connect to a local partner network. Turn it on only for the intended profile and follow the plan instructions. Roaming settings on your home SIM are separate; check them to avoid unintended charges.
10. Wait for registration. Allow a few minutes after arrival for the phone to register. If service does not appear, toggle airplane mode once or restart the phone, then review the troubleshooting steps below.

Menu names vary. Use the setup method provided with your plan, and do not repeatedly scan a one-time QR if it may already have installed the profile. See the Android eSIM installation instructions or iOS eSIM installation instructions for a second device.

Using the eSIM for mobile data while travelling

Once installed, open Settings → Connections → SIM manager and select the travel eSIM for mobile data. Verify the selection after a restart or profile change.

When you reach the destination, turn on the travel eSIM and mobile data. If the plan requires data roaming, enable roaming for that eSIM only. The phone may connect to an available local partner network after a short wait. The plan’s supported destination, local network availability, device bands, and local conditions affect whether and how well it connects. A compatible phone does not guarantee identical coverage across cities, buildings, or rural areas.

You may keep the home SIM active for calls or messages while using the travel eSIM for data. Set each preferred line separately. If you want to avoid home-line data roaming, check your carrier’s terms and disable roaming on that SIM. Automatic data switching may move data to another line if the preferred SIM cannot connect.

A data-only plan does not automatically provide a phone number, voice service, or SMS. Internet calling and messaging apps can use data. If you need SMS verification, check how to keep your usual number available while travelling.

Track data use and validity in the provider’s app or account. For a multi-country route, confirm that every destination is included. Review the plan terms if hotspot use matters.

Common problems and checks

“Add eSIM” is missing

Check the full model number and country-specific specifications first. Restart the phone and install available software updates, then revisit Connections → SIM manager. If there is still no add option or EID, contact Samsung with the model code. If the handset was carrier-sold, ask the carrier whether eSIM is disabled for that exact variant. A reset or repeated QR scan cannot add hardware or carrier eligibility that is not present.

The QR code will not scan

Increase screen brightness on the device displaying the QR code, clean the camera lens, and hold the phone steady at a comfortable distance. Make sure the code is the one issued for your plan and is fully visible. If the camera cannot read it, see whether the plan includes manual activation details. Some codes are single-use, so check the profile list before trying again.

The profile will not download

Confirm Wi-Fi or another working internet connection, date and time settings, and available device storage. Make sure the code or activation information has not already been used and that the provider has not set an installation deadline. If an error appears, save its exact wording and ask the plan provider to check the profile status before deleting anything.

The profile is installed, but there is no service

Confirm the eSIM is enabled and selected for data, and turn on roaming if required. Check destination and validity, then toggle airplane mode or restart. Use automatic network selection unless support advises otherwise.

Data does not work although signal bars are visible

Check the data line, mobile data, allowance, and validity. Follow the plan’s APN instructions only if provided. Turn off Wi-Fi briefly to test cellular data, and correct the active SIM if needed.

The eSIM works, but the home line has unexpected charges

Review which SIM is set as the default for data, whether automatic data switching is enabled, and whether roaming is on for the home SIM. Check the home carrier’s charges and terms. Turning off data roaming for the home line can help prevent data use there, but it does not by itself cancel a roaming agreement or stop voice and messaging charges.

I cannot move the eSIM to another phone

Do not assume that an installed profile can be transferred or re-used. Some profiles are limited to one installation or device. Check the plan’s transfer and reissue rules with its provider before removing the profile or resetting the phone. Removing an eSIM from the device may not cancel the associated service or make its QR code usable again.

Frequently asked questions

Is the 128GB version definitely eSIM-compatible?

The storage size does not establish eSIM support. Samsung identifies the Note20 Ultra as compatible in its Australian guidance, but that guide concerns Australian variants. Verify the full model number, EID or add-eSIM option, carrier lock, and local specifications on your particular phone.

Does 5G mean that eSIM is supported?

No. 5G describes a mobile network capability; eSIM is a separate SIM feature. Check each independently. A phone could support 5G but have a regional or carrier configuration that does not offer eSIM.

Can I keep my physical SIM and use an eSIM together?

Some compatible Galaxy variants can use a nano-SIM and eSIM. The exact supported configuration depends on the model and software. Confirm the SIM manager options on your handset and check which line handles data, calls, and messages.

Will a travel eSIM work as soon as I install it?

Not necessarily. Installation downloads a profile; service may depend on the plan’s activation timing, destination, local network registration, and settings. Read the plan instructions and allow time for the phone to connect when you arrive.

Does the eSIM include a phone number?

A travel data plan may provide mobile internet only. Calls and SMS are not included unless the terms specifically say they are. Internet calling and messaging apps can use data, but they do not replace services that require a standard mobile number.

Should I delete the profile after my trip?

Only after checking the provider’s instructions and confirming you no longer need it. Deleting the profile may prevent it from being reused or restored. Ask the provider if you are unsure whether it can be reinstalled or transferred.

Final check before your trip

Before choosing a plan, confirm that your Samsung Galaxy Note 20 Ultra 5G 128GB has an EID or an eSIM option, identify its complete model number, and verify that it is not restricted by its original carrier. Then check that the plan includes every destination on your route, review its data and validity conditions, and save the installation details somewhere you can access during travel.

If the handset passes those checks, browse the available destinations and terms on the Kaspersky eSIM Store website or in the app to choose and activate a suitable eSIM plan for mobile data abroad. The homepage is a general place to review current destinations and plans; it is not a country-specific tariff. If eSIM support remains uncertain, verify the device with Samsung or its seller before you arrange a plan, and consider a compatible physical SIM or Wi-Fi as an alternative.