Sony Xperia 1 IV 256GB eSIM: compatibility and setup

The Sony Xperia 1 IV 256GB can use an eSIM when it is the eSIM-capable regional version. Sony’s official specifications for the 256GB product list nanoSIM/eSIM and dual SIM with nanoSIM + eSIM. Sony’s Help Guide adds an important qualification: eSIM setup is described for model XQ-CT54 only. Other Xperia 1 IV model numbers, including XQ-CT62 and XQ-CT72, use two physical nano SIMs or a nano SIM and a memory card instead. In other words, the storage size does not identify the SIM configuration by itself.

For a travel eSIM, the practical answer is therefore: yes, if your Sony Xperia 1 IV 256GB is the compatible XQ-CT54 version and the mobile operator or eSIM plan accepts the device. Confirm the model and the phone’s own settings before you pay for a tariff. Regional distribution, carrier customisation, firmware and the retailer’s description can affect what is available on a particular handset.

Quick answer

Does Sony Xperia 1 IV 256GB support eSIM?

Yes, Sony lists eSIM support for the 256GB configuration in its official specifications. The listed SIM capability is nanoSIM/eSIM, and the dual-SIM arrangement is nanoSIM + eSIM. That is the configuration you want when you plan to keep your normal physical SIM active and use a second profile for mobile data during a trip.

The qualification matters because “Xperia 1 IV 256GB” is a commercial name, not a full hardware identifier. Sony’s Help Guide marks eSIM setup “XQ-CT54 only”; XQ-CT62 and XQ-CT72 use two nano SIMs or a nano SIM and memory card instead.

This is why a marketplace listing, box label or storage figure is not enough. An imported or carrier-branded phone may use a different model number, SIM tray or menu. Firmware can change wording, but it cannot add eSIM hardware that the regional variant does not provide. Treat the handset as compatible only after checking the model number, EID and Add SIM option.

What to check before buying an eSIM tariff

Use the checklist below while you have the phone in your hand. For an import or second-hand purchase, ask for screenshots of About phone and SIM settings.

• [ ] Open About phone and record the model number, not only the name “Xperia 1 IV”.
• [ ] Look for an EID in the SIM status or device information screen.
• [ ] Open the SIM settings and look for Add SIM, Download a SIM or a similar eSIM option.
• [ ] Confirm that the phone is not locked to a carrier that restricts additional SIM profiles.
• [ ] Install pending system updates and keep a reliable internet connection for installation.
• [ ] Check that the tariff covers the country, countries or region on your itinerary.
• [ ] Read the tariff’s data amount, validity period, activation rule, top-up terms and refund conditions.
• [ ] Decide which SIM will handle calls and messages and which will handle mobile data.
• [ ] Keep the QR code or activation details available on another screen.

An EID is a device identifier for the embedded SIM. It is a strong sign of eSIM hardware, but also confirm that Add SIM is available and that the chosen tariff accepts the device. If there is no EID and no Add SIM option, do not try to force support by changing the region or installing an unrelated file; confirm the model with Sony, the carrier or the seller.

Check the model, EID and eSIM menu

Start with the model identifier:

1. Open Settings.
2. Scroll to About phone.
3. Note the model name or model number shown there.
4. Compare it with the seller’s documentation and the regional specification for your handset.

On many Xperia builds, the EID is under Settings > About phone > SIM status or a similarly named screen. Labels can differ after an update, so search Settings for “EID” if needed. Treat it as private device information and do not post it publicly.

Then check the activation path:

1. Open Settings > Network & internet > SIMs.
2. Look for Add SIM, a plus icon or Download a SIM.
3. Open that item only far enough to confirm that eSIM setup is offered.
4. Stop if the phone asks for a QR code and you have not yet chosen a tariff.

Sony’s Help Guide describes the same route: open Network & internet, choose SIMs and use the add option. Wording varies by Android version and language. A physical SIM in the tray does not create eSIM support; if the add option is absent, check the model number first.

Check your device before choosing a plan if you are unsure about the regional version, carrier lock or settings menu.

How to install and activate an eSIM

Before you begin, charge the phone, connect it to reliable Wi-Fi, update it if needed and keep the QR code available on another screen. If the plan supplies manual activation details, follow those instructions instead.

1. Confirm compatibility

Check that the phone is the eSIM-capable regional version, that the EID is visible and that Add SIM or Download a SIM appears in Settings. Confirm that the device is not carrier-locked. Do this before opening the QR-code installation flow.

2. Open the SIM settings

Go to Settings > Network & internet > SIMs. Tap the plus icon, Add SIM or Download a SIM, depending on the wording on your software version. If a physical SIM is already installed, the add control may appear beside the existing SIM list.

3. Scan the QR code

Choose the option to download or add an eSIM and scan the QR code supplied with your plan. Keep it private. If the camera cannot read it, increase the other screen’s brightness, clean the lens and keep the whole code in frame. Do not reuse a one-time code without confirmation.

4. Download the profile

Review the plan name shown by Android, accept the download and wait while the phone contacts the service. Keep Settings open until the profile is installed. This can take several minutes.

5. Name and enable the eSIM

Give the profile a clear label such as “Travel data” and enable it when needed. Check when validity begins: some tariffs start on installation, while others start when the eSIM connects to a supported network.

6. Select the data SIM

Choose the new eSIM as the SIM for mobile data. Keep calls and SMS on your usual number if appropriate, and disable data roaming on the physical SIM to avoid accidental charges.

7. Turn on data roaming when required

Some travel eSIM tariffs require data roaming to be enabled for the eSIM to register on a partner network. Turn on roaming only for the eSIM profile if the plan instructions require it. Keep the normal SIM’s data roaming off unless you deliberately intend to use its home operator abroad.

For detailed guidance, use the Android eSIM installation instructions or the iOS eSIM installation instructions when preparing another phone. Kaspersky eSIM Store is an app and website that helps you choose, arrange and activate an eSIM with a mobile-data tariff for an overseas trip; it is not a mobile operator or network owner.

Using the eSIM for mobile data while travelling

The most predictable setup is to keep your normal number for calls and messages and assign mobile data to the travel eSIM. Install it over reliable Wi-Fi, but leave it disabled before departure if the tariff starts at installation. After arrival, enable the eSIM, select it for data and allow roaming for that profile when required.

Use the eSIM for maps, tickets, translation, messaging and ride-hailing. Estimate video calls, cloud backups and hotspot use because a small package can be consumed quickly. The Xperia’s 5G icon does not guarantee 5G: local network, tariff, coverage, radio bands and selected data SIM all matter. Sony notes that only the SIM selected for data can use 5G.

In Settings > Network & internet > SIMs, confirm that the eSIM is enabled and selected for data. Turn off automatic data switching if you want to prevent fallback to the physical SIM. Restrict background data and pause cloud backups to control usage; these actions do not change the tariff’s validity or coverage.

Kaspersky eSIM Store helps you choose a destination and a suitable eSIM tariff, review its traffic and duration, and manage activation through the app or website. The available network, speed, roaming requirement and support for calls or SMS depend on the selected tariff and local operator arrangements. Most travel eSIM offers are intended for data and do not include a normal phone number.

Practical travel scenarios

One-country holiday

Verify the EID, install the profile on Wi-Fi and label it with the country. On arrival, select it for data, enable roaming if required and test a web page.

Multi-country route

Check that one regional tariff covers every stop; a plan for one country does not automatically cover neighbouring countries. Compare the route with destinations, validity and data amount, and confirm top-up rules if needed.

Work trip and return home

Review hotspot limits because a laptop or video call can use data quickly. At home, switch data back to the normal SIM and disable roaming on the travel profile. Do not delete an eSIM until you know whether it can be reinstalled.

Common problems and checks

There is no Add SIM option

Recheck the model number and look for the EID. The official Sony procedure applies to the eSIM-capable variant, not automatically to every Xperia 1 IV. Install available system updates and restart the phone. If XQ-CT62 or XQ-CT72 is shown, its physical-SIM layout is a likely explanation. Contact the seller or Sony support with the model number if the phone’s documentation conflicts with the menu.

The QR code will not scan

Use a second screen, increase brightness, clean the camera lens and keep the complete code in frame. If manual activation is offered, enter the details exactly as supplied. Avoid repeated attempts with a one-time code; ask support whether it has been consumed.

The profile downloads but has no service

Confirm that the eSIM is enabled and selected for data. Check destination, validity and start condition. Turn roaming on for the eSIM if required, wait in an area with signal, then toggle mobile data or airplane mode. If a network appears but pages do not load, follow the plan’s APN instructions rather than guessing.

Mobile data uses the wrong SIM

Return to Settings > Network & internet > SIMs and select the travel eSIM. Disable automatic switching if present, test a web page and turn off roaming for the home SIM.

Calls or SMS do not work through the travel eSIM

That can be expected. A travel eSIM tariff may be data-only and may not include a phone number, voice service or SMS. Keep your normal SIM or use messaging and calling apps over the travel connection. Check the tariff before assuming voice is included.

The phone is locked or the tariff is rejected

An operator lock can prevent a profile from working even with an EID. Ask the original carrier to confirm the unlock status. If the plan is rejected because of region, device or network restrictions, do not delete the profile before support checks it. Provide the exact model number, not only “Sony Xperia 1 IV 256GB”.

FAQ

Is Sony Xperia 1 IV 256GB eSIM compatible?

Yes, the 256GB specification lists nanoSIM/eSIM, but the answer depends on the regional hardware. Sony’s Help Guide identifies XQ-CT54 as the eSIM-capable version and distinguishes it from XQ-CT62 and XQ-CT72. Check the model number, EID and Add SIM menu on your handset.

Can I use a physical SIM and eSIM together?

Yes, on the compatible version you can use one nano SIM and one eSIM as a dual-SIM setup. You choose which SIM handles mobile data. Only the selected data SIM can provide the active 5G data connection when both SIMs support 5G.

Do I need data roaming for a travel eSIM?

Sometimes. Many international data profiles require roaming to be enabled on that eSIM so it can use a partner network. Follow the selected tariff’s instructions and enable roaming only on the intended data profile when possible.

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 tariff for mobile internet during an overseas trip. Network availability and conditions depend on the selected tariff and local network arrangements.

Conclusion: check the device, then choose the travel eSIM

The Sony Xperia 1 IV 256GB can fit a travel eSIM when it is the eSIM-capable regional version. Do not decide from “256GB” alone. Open About phone, record the model number, find the EID and confirm that Settings > Network & internet > SIMs offers Add SIM or Download a SIM. Check that the handset is unlocked and the tariff covers every destination.

When those checks are complete, Kaspersky eSIM Store can help you choose and arrange an eSIM tariff for mobile data in your destination. Install it over a reliable connection, select it as the data SIM when you arrive and monitor traffic and validity. This check helps avoid buying a tariff for a regional variant that cannot install it.