Vivo X300 Pro 512GB eSIM compatibility and travel setup

The Vivo X300 Pro 512GB can use eSIM in the international version listed on vivo’s Global product page. The important qualification is the market version: the China-market X300 Pro 512GB is listed by vivo China with two physical nano-SIM slots, not eSIM. Storage capacity alone does not identify which radio and SIM configuration your handset has. Check the exact model and its settings before purchasing an eSIM plan.

For a compatible international handset, eSIM can keep a travel data plan separate from the physical SIM you use at home. You can install the profile before departure over Wi-Fi, then select it for mobile data when you reach a supported destination. Whether a particular plan connects still depends on the plan’s coverage, local networks, the carrier, device software and local rules.

This guide explains the official specifications, the checks to make on your handset, and how to prepare for a trip.

Vivo X300 Pro 512GB at a glance

The 512GB in the product name refers to storage, not RAM. vivo’s Global page pairs it with 16 GB RAM; the China page lists more than one RAM option for 512 GB. These are separate market configurations.

Does this exact 512GB variant support eSIM?

The answer depends on which Vivo X300 Pro 512GB you own. For the international version represented on vivo’s Global product page, yes: vivo lists a 16 GB + 512 GB option and SIM configurations that include one physical SIM with one eSIM, or two eSIM profiles. The product notes also say eSIM availability can vary by country or region and carrier, and that a wireless service plan is required.

For the China-market Vivo X300 Pro 512GB, do not assume eSIM is supported. vivo China’s specifications list “dual nano” SIM, including for its 12 GB + 512 GB and 16 GB + 512 GB configurations. The official listing does not show an embedded SIM option for that version. If your device was imported, its storage size or the X300 Pro name does not override the regional SIM hardware and firmware.

Retail, carrier and software releases can also differ. A carrier may limit supported profiles, and a locked phone or regional firmware can prevent setup even when eSIM hardware is present. Check the product code, ask the seller which market version it is, and confirm that Settings shows an EID and eSIM setup.

Storage capacity alone does not establish compatibility. Treat the international and China-market versions separately. If the model code is unclear, verify the phone before buying a plan; a dual nano-SIM tray does not prove eSIM support.

Compatibility checklist for your phone

Use these checks before choosing a travel plan. Menu wording can vary slightly by country, OriginOS release and carrier build, so use Settings search if the named path is not visible.

• [ ] Confirm whether your handset is the international or China-market version.
• [ ] Find an EID in Settings and confirm that an Add eSIM or download-plan control is available.
• [ ] Check that the phone is unlocked and its software is up to date.
• [ ] Verify destination coverage, activation timing and plan conditions before purchase.

1. Identify the regional model. Open Settings → About phone and record the model number, software version and region information shown there. Compare the model number with the seller’s documentation or the appropriate vivo regional support page. Do not rely only on the “Vivo X300 Pro 512GB” retail name.
2. Look for an EID. Open Settings → About phone → Status or search Settings for EID. Some software releases place the EID under SIM or eSIM management. An EID is a strong sign that the phone has an embedded SIM component, but you should still check that the system exposes eSIM setup and that your carrier accepts this model.
3. Find the eSIM control. In Settings, search for eSIM, Add eSIM, Download SIM, or Manage eSIM. It may appear under Mobile network, SIM cards & mobile networks, or Network & internet. If the option is missing, restart the phone, install available official system updates, and search again.
4. Check for a carrier lock. Ask the original carrier or seller whether the phone can accept another provider’s profile.
5. Review the plan. Confirm coverage for each destination, validity start, network support and any hotspot allowance you need.

For a quick internal checklist, check whether your device is compatible. If the Vivo X300 Pro 512GB has no EID and no eSIM option after an update, treat it as unsupported unless vivo confirms otherwise for that exact model code. Do not try to force installation using a QR code from an unrelated profile.

Install and activate an eSIM

Use stable Wi-Fi and keep your QR code or activation details available. Some codes are single-use, so follow the plan instructions and do not delete an installed profile casually.

Before installation

• Confirm the handset supports eSIM and is not carrier-locked.
• Make sure the plan is intended for your destination and the validity period suits your trip.
• Check when validity starts and which SIM will be used for mobile data.
• Connect to Wi-Fi and install available official software updates before setup.

Add the profile

1. Open Settings and search for eSIM or Add eSIM. Open the SIM or mobile-network settings if search does not locate it.
2. Choose Add eSIM, Download eSIM, or the equivalent option. The phone may ask you to confirm that it can download a mobile plan.
3. Scan the QR code supplied with your plan, or choose manual entry if the plan instructions provide an activation code. Enter details exactly as provided; do not guess a confirmation code or server address.
4. Review the plan label and confirm the download. Wait until the phone reports that the profile has been added. Keep Wi-Fi connected while it completes.
5. Give the line a clear label such as “Travel data” and leave your home line named separately. If the phone asks which SIM to use for calls, texts or data, select the option that matches your intended use.
6. If you are still at home, leave the new line switched off or keep mobile data assigned to your normal SIM until you are ready. This can help avoid using a travel plan earlier than intended, but follow the plan’s stated start rule.

For device-specific walkthroughs, use the Android eSIM installation instructions or, if you are setting up an Apple device instead, the iOS installation instructions. The Vivo X300 Pro 512GB runs Android; the iOS guide is only relevant to a different device in your travel party.

Activate for the trip

When the plan should begin, switch on the travel eSIM and select it for Mobile data. If required by the plan, enable roaming for that line only. Review roaming settings on your home SIM to avoid unexpected charges.

At the destination, allow the phone time to register. Try automatic network selection first, then choose a named network manually only if the plan directs you to. Check APN instructions if data fails. Do not delete or reset the profile while troubleshooting.

Using the Vivo X300 Pro 512GB while travelling

A data-only travel eSIM is useful when you want maps, ride-hailing, messaging, email and web access without swapping out your home SIM. It does not automatically replace a normal phone number. Voice calls and SMS are not included unless the selected plan explicitly says otherwise; internet calling and messaging apps can work over data, subject to their own account and destination requirements.

Short city break. Install over Wi-Fi before leaving after checking when validity begins. At arrival, switch on the travel line and select it for data. Keep the home line available for calls if its roaming terms suit you.

Multi-country itinerary. Check the supported-country list and any fair-use terms; do not assume a country plan spans the route. Use automatic network selection unless the plan names a network to choose manually.

Work trip with a home number. Keep the physical SIM available for calls or one-time codes and assign data to the travel profile. Check home-carrier roaming charges; internet calling requires a plan or app that supports it.

Hotspot for another device. Check that tethering is allowed. Monitor usage, since laptops and tablets can consume data quickly through updates or video.

Download maps and travel documents over Wi-Fi, then monitor data in both phone settings and the plan account; totals may update at different times.

Troubleshooting common eSIM problems

There is no “Add eSIM” menu. Check the model code, search Settings for EID, install official updates and restart. If both EID and eSIM controls are absent, ask vivo or the seller to confirm the regional version before proceeding.

The QR code will not scan or the download fails. Use stable Wi-Fi, increase brightness on the QR display and confirm the code has not been used. If manual setup is offered, copy the details exactly. Ask the plan provider about a replacement if the profile was consumed.

The profile is installed but shows no signal. Check that the line is on, the plan is active and you are in its coverage area. Briefly toggle airplane mode or restart. Some travel profiles connect only after arrival.

Signal appears but the internet does not work. Assign mobile data to the travel profile and enable its roaming if required. Check the plan’s APN and network-selection guidance, then test a webpage with Wi-Fi off.

The phone selects the wrong line for data. Recheck the Mobile data selection. Active SIM combinations vary by regional software and carrier; do not assume every possible pairing can run at once.

The plan works in one country but not another. Check destination coverage and exclusions. Network bands, local coverage and roaming agreements affect service; select a named partner manually only when instructed.

You cannot move the eSIM to another phone. Some profiles cannot transfer after activation. Check the plan terms before removing it or resetting the phone; a used QR code may not work again.

If the issue remains, note the model code, software version, destination and error message before contacting support. Keep the QR code and activation details private.

Frequently asked questions

Does every Vivo X300 Pro 512GB have eSIM?

No. vivo Global lists eSIM for the international version; vivo China lists dual nano-SIM for its 512 GB model. Check your own regional model and menus.

Is the EID the same as the IMEI?

No. EID identifies the embedded SIM component; IMEI identifies the device. Look for EID and an Add eSIM control, since IMEI alone does not prove support.

Can I keep my physical SIM and add a travel eSIM?

The international specification lists SIM1 + eSIM1. Active combinations can depend on regional software and carrier, so check your phone’s SIM controls.

Should I install the profile before leaving?

Often yes, over Wi-Fi. Check whether validity starts at installation or first connection, and do not remove the profile as a routine reset.

Will the eSIM give me a local phone number?

A travel data eSIM is for mobile internet unless voice or messaging is explicitly included. Internet-based calls and messages depend on the app and plan.

Final trip check: confirm the device, then choose the eSIM

Before paying, verify that your Vivo X300 Pro 512GB is the international version, shows an EID and Add eSIM in Settings, and is unlocked. Do not infer support for the China-market dual nano-SIM model from its name or storage size.

Match the plan to your route, data needs, validity and activation timing; check hotspot, roaming and APN requirements too. 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 its terms, install the profile on a compatible phone and keep your SIM settings clear before departure.