eSIM for Vivo X300 Pro 128GB 5G: compatibility and setup

If you are checking Vivo X300 Pro 128GB 5G for travel connectivity, the careful answer is conditional. Current official vivo specifications for the X300 Pro in several international markets list eSIM combinations such as SIM1 + SIM2, SIM1 + eSIM1, and eSIM1 + eSIM2. The same specifications warn that eSIM availability can vary by country, region, carrier, infrastructure, and software version. They do not establish that every storage-labelled unit sold as Vivo X300 Pro 128GB 5G has the same cellular hardware.

The 128GB label is important here. Official regional pages list different memory configurations, and the exact 128GB retail variant is not consistently identified in the manufacturer specifications reviewed for this guide. Do not treat the X300 Pro family name, a 5G badge, or a seller’s description as proof. Look for an EID and an option to add an eSIM on the phone. If both are present and the device is unlocked, mobile-data eSIM use is normally suitable; if neither is present, ask vivo or the seller before purchasing.

Quick answer for this exact device

The X300 Pro platform has official regional versions with eSIM support, but Vivo X300 Pro 128GB 5G should be marked “verify on device” rather than automatically approved. Storage capacity does not determine eSIM capability. Two phones with a similar name can have different regional firmware, modem configuration, SIM tray behaviour, or carrier restrictions. A confirmed EID and an active “Add eSIM” or equivalent menu are the most useful checks before you spend money on a travel plan.

Key specifications and what they mean for eSIM

Why regional versions can differ

Manufacturers can use one family name across several markets while changing modem configuration, supported bands, SIM combinations, firmware, or operator certification. Official X300 Pro pages show eSIM-capable combinations in some markets, while another regional page may describe two physical nano-SIMs. An imported Vivo X300 Pro 128GB 5G may therefore have eSIM disabled or unavailable even when a similar-looking unit supports it.

A carrier lock can also prevent activation, and the wording or location of the menu can change with software. The 5G badge describes radio-network capability; it does not prove that an eSIM element is enabled. “Dual SIM” can mean two physical SIMs, one physical SIM plus eSIM, or a regional combination, so check the phone itself.

What eSIM does for a trip

An eSIM is a digital SIM profile stored in a compatible device. For travel, it can provide mobile data for maps, translation, tickets, messaging, email, and work tools without removing your everyday SIM. Coverage, data amount, validity, activation rules, and supported networks still follow the selected plan.

Kaspersky eSIM Store is an app and website where you can choose, arrange, and activate an eSIM with a suitable tariff for mobile internet during an overseas trip. It is not a mobile operator, network owner, or mobile-internet provider. A travel eSIM generally does not replace your phone number, voice service, or SMS unless its conditions say otherwise.

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Compatibility check before purchase

Use the phone, not only the product name, to make the decision before selecting a travel plan, especially if Vivo X300 Pro 128GB 5G was imported, refurbished, purchased through an operator, or described by a seller without a full model identifier.

The compatibility checklist

• Identify the exact unit. In device information, record the model number, software version, and region. Keep 128GB as a storage description, not a cellular certification.
• Find an EID. This long embedded-SIM identifier is different from an IMEI and may appear under About phone, Status, or SIM status. Do not share the full number publicly.
• Find eSIM controls. In SIM management, look for Add eSIM, Download a SIM, Add mobile plan, or equivalent wording.
• Confirm the SIM mode. Check for SIM1 + eSIM1 or another documented eSIM combination; a two-position physical tray is not proof of eSIM support.
• Check the lock and destination. Confirm that the phone is unlocked and that the selected plan covers the country or region.
• Prepare an internet connection. Use Wi-Fi for the download, keep the QR code on a second screen, and repeat the check after a stable system update.

How to find the EID

Open Settings, choose About phone, Device information, Status, or SIM status, and look for EID or Identifiers. On some OriginOS builds, the item is inside SIM management. Use Settings search for “EID” and “eSIM” when available.

An EID is not a QR code and does not activate a plan by itself. If it is absent, confirm that setup is complete and the software is current. If there is still no EID and no Add eSIM option, pause the purchase and ask vivo or the seller about this exact regional unit.

Why this check comes before the tariff

Check your device before paying for a travel plan. An eSIM plan cannot add missing hardware or unlock a restricted phone. Purchasing first can leave you with a profile that cannot be downloaded, cannot register on the destination network, or cannot be moved to another device. Before you choose an option in Kaspersky eSIM Store, confirm the EID, the Add eSIM control, the phone’s unlocked status, the destination, the plan validity, the data amount, and the activation rules. If the exact 128GB unit is not documented for your market, treat the on-device check as mandatory.

How to install an eSIM on Vivo X300 Pro 128GB 5G

Start only when the handset shows eSIM support, is not carrier-locked, and is connected to the internet. Have the QR code or activation profile ready and check when the plan’s validity begins. See the Android installation instructions and the iOS installation instructions.

1. Prepare the profile

In Kaspersky eSIM Store, choose the destination and review the plan conditions only after checking the phone. Keep the QR code on a second screen, or prepare the supplied manual activation details.

2. Open mobile-network settings

Open Settings, enter Mobile network or SIM card and mobile network, and choose Add eSIM or Add mobile plan. If no such command exists, stop and repeat the compatibility check.

3. Scan the QR code

Select the QR-code option and scan the complete code from the second screen. Increase brightness and remove glare; use manual details if supplied.

4. Download the profile

Confirm the profile is being added to Vivo X300 Pro 128GB 5G, accept the download, and wait. Do not repeatedly rescan or assume an activated profile can be transferred.

5. Label the line

Name it “Travel data” or the destination, and keep it separate from your everyday line.

6. Choose the mobile-data line

In SIM management, select the travel eSIM for mobile data. Keep calls and messages on the regular line if the plan is data-only.

7. Configure data roaming if required

Enable roaming only for the travel profile and only when the plan requires it. Keep roaming off on the everyday line to reduce unexpected charges.

8. Test the connection

Turn on mobile data for the travel line and test an internet app. Registration can take a few minutes, and a pre-departure test may not connect until you reach a covered destination.

Activating it at the right time

Installation and activation can be separate events. Check when validity begins: install close to departure if installation starts the period, or install earlier on Wi-Fi if activation begins on first destination connection. Do not delete a working profile merely because it has not connected before the trip.

Using the travel eSIM on the road

Keep your regular number

Leave the everyday SIM enabled for calls and familiar messages, but select the travel eSIM for mobile data. Disable automatic data switching so the phone does not fall back to the everyday line. A data-only travel plan does not replace your regular number.

Before, during, and after arrival

If validity starts on installation, install close to departure. If it starts on first destination connection, installing at home on Wi-Fi may be convenient. Keep the QR code on another device, enable the profile on arrival, select it for data, and turn on its required roaming switch. Do not repeatedly delete and reinstall a profile.

Multi-country trips and data use

Confirm every destination is covered; a working profile may show no service outside its plan. At borders, allow time to register on the next partner network. Limit background data, video, backups, updates, and hotspot use, and check remaining data before relying on the phone for navigation.

Common problems and checks

There is no Add eSIM option

Check the exact model number, search Settings for “EID” and “eSIM”, install the correct regional software update, restart, and check again. If the EID and menu are still absent, the hardware or firmware may not support eSIM. Ask vivo or the seller to confirm this exact market instead of relying on the 5G badge.

The QR code will not scan

Display the complete code on a second screen, increase brightness, remove glare, and hold the phone steady. Use manual activation details if the plan supplies them. If the code may already have been used, ask support whether it remains available.

The profile downloaded but there is no network

Select the travel eSIM for mobile data, enable its data roaming if required, turn off automatic data switching, and check that the destination is covered. Turn airplane mode off, restart once, and allow a few minutes for registration. Use automatic network selection unless the plan says otherwise.

Data does not work or is used unexpectedly

Confirm that the correct line is selected for data and that the travel line, rather than the everyday SIM, has the required roaming switch enabled. Check the plan’s own access-point instructions, disable background data and hotspot use, and review cloud backups.

The phone is locked or the profile cannot move

Ask the original operator about unlocking. Resetting network settings or removing a SIM does not necessarily remove a carrier lock. An activated eSIM may also be restricted from transfer, so do not delete a working profile until the plan permits it.

FAQ

Does Vivo X300 Pro 128GB 5G support eSIM?

Some official regional X300 Pro specifications confirm eSIM-capable combinations, including physical SIM plus eSIM. For the exact Vivo X300 Pro 128GB 5G unit, the answer remains conditional: confirm an EID, Add eSIM, and an unlocked device.

Does 5G mean eSIM is available?

No. 5G is a radio-network capability. eSIM also depends on hardware, firmware, region, and carrier support.

Can I use a travel eSIM beside my normal SIM?

Often yes where the regional version documents a combination such as SIM1 + eSIM1. The phone’s SIM manager determines which profiles can be enabled and which carries data.

Do I need an EID or a QR code?

The QR flow normally provides activation details, but the EID is an important compatibility signal. If both the EID and eSIM menu are absent, do not infer support from a QR code.

Does a travel eSIM include calls and SMS?

Not necessarily. In this context it is generally for mobile internet and may not include a separate number, calls, or SMS. Use the regular line or internet calling apps according to the plan.

Short conclusion

The current official regional evidence supports eSIM on several X300 Pro versions, but it does not turn every Vivo X300 Pro 128GB 5G listing into a guaranteed compatible device. The reliable sequence is: identify the exact unit, find its EID, locate Add eSIM, confirm the phone is unlocked, verify destination and plan conditions, install over a working internet connection, select the travel profile for data, and enable data roaming only when required. This approach respects the differences created by market, carrier, firmware, and network infrastructure.

Final device check and trip eSIM

Before buying, check Vivo X300 Pro 128GB 5G itself: confirm the EID, confirm the Add eSIM option, confirm the device is not carrier-locked, and confirm that the selected eSIM plan covers every destination on your trip. Then choose an appropriate travel eSIM option in Kaspersky eSIM Store, review its data and validity conditions, and keep the QR code or activation profile available. After installation, set the travel eSIM as the mobile-data line, protect your everyday line from unintended roaming, and test the connection when the plan is ready. If any device check is missing, pause and verify compatibility before purchasing the tariff.