Apple iPhone 12 64GB eSIM: compatibility and setup guide

Quick answer: Apple lists the iPhone 12 as supporting Dual SIM with a nano-SIM and eSIM. That answer applies to the standard international version, not every phone sold under the same family name. Apple also lists iPhone 12 models from mainland China, Hong Kong and Macao that use two physical nano-SIM cards. The storage label 64GB does not identify the sales region, so it cannot confirm eSIM support on its own. Check the exact phone before choosing a travel plan.

This guide explains what the available evidence means for Apple iPhone 12 64GB, how to check your own handset, and how to set up a data eSIM if the device supports it. Apple’s iPhone 12 Technical Specifications page lists 64GB as a capacity and nano-SIM plus eSIM as the SIM configuration; Apple’s current SIM guidance also describes regional two-nano-SIM versions. These Apple pages were checked on 1 November 2026. The name and capacity in a listing do not reveal the full regional model identifier.

Does Apple iPhone 12 64GB support eSIM?

Usually yes, if it is the standard iPhone 12 variant sold in a market where Apple’s specifications list nano-SIM and eSIM. It may not if it is a regional two-nano-SIM version. A listing that says only “Apple iPhone 12 64GB” leaves that important detail unresolved. Confirm the model number and the eSIM controls on the actual phone, especially when buying a used or imported device.

The table is about capability, not network availability. An eSIM-capable phone still needs a compatible eSIM plan, a supported mobile network in the destination, an internet connection for initial installation, and permission to use another provider’s service. The iPhone 12 can use only one cellular data line at a time, even when more than one plan is stored or active.

Why the sales region matters

Apple documents a two-nano-SIM configuration for certain iPhone models sold in mainland China, Hong Kong and Macao. Its current Using Dual SIM with two nano-SIM cards guidance explicitly includes iPhone 12, iPhone 12 Pro and iPhone 12 Pro Max in the applicable model list. Apple’s separate list of iPhones that use nano-SIM and eSIM includes the iPhone 12 family in other markets. Together, these details mean the broad family specification should not be treated as a promise for every regional unit.

Keep two questions separate:

1. Does the hardware and regional configuration in this phone support eSIM? This is the device-compatibility question. A two-slot physical SIM configuration is a warning that it may not.
2. Can this particular eSIM profile be installed and used where you are? This depends on the plan, the provider’s rules and the country. For example, mainland China has separate restrictions for eSIM service there; those rules do not change what the phone’s hardware supports elsewhere.

The country where a phone is used is not always the country for which it was manufactured. An iPhone purchased abroad can still have a regional model designation, while a phone purchased locally may be an import. Check the model identifier on the device and, if anything is unclear, ask the seller or Apple to confirm whether that exact unit supports eSIM. Do not infer it from the box language, the phone’s current location, the number of SIMs included in a sale, or the 64GB capacity.

Carrier lock is a separate issue. A handset can have eSIM hardware and still be restricted to one mobile provider. Apple’s guidance says that “No SIM restrictions” next to Carrier Lock in Settings means the iPhone is unlocked. If the phone is locked, only the current provider can authorize an unlock. A travel eSIM from another provider may not activate until that restriction is removed.

Check compatibility before choosing a plan

Use the handset itself, not just the product listing. If you are buying second-hand, ask the seller to show these screens before payment. Menu wording can vary a little with the iOS version and language, but the checks are in the same general place.

On-device compatibility checklist

• [ ] Open Settings → General → About and look for an EID entry. EID is the identifier associated with the embedded SIM hardware.
• [ ] In Settings → Cellular (also called Mobile Data in some regions), check whether Add eSIM or Set Up Cellular is available.
• [ ] On the same About screen, find Model Number. Tap the part number if needed to reveal the model number, then confirm the exact regional version with the seller or Apple.
• [ ] Under Carrier Lock, look for No SIM restrictions if you plan to use a plan from a provider other than the one that sold the phone.
• [ ] Ask whether the device is fully activated and working, and whether any management profile or account restriction prevents changing mobile plans.
• [ ] Confirm that the exact travel plan supports the destination and is intended for mobile data on an iPhone.

An EID entry is useful evidence, but do not rely on a single clue if the phone’s history or region is uncertain. A visible Add eSIM option is another practical check. If both are missing, do not purchase a plan expecting it to install. Restart the phone, confirm iOS is up to date, and have Apple or the seller identify the exact model before treating it as compatible. A software update cannot add eSIM hardware to a regional version that does not have it.

If you want a quick comparison before checkout, check your device compatibility. The general compatibility tool is a starting point; the phone’s EID, Settings menu and model number are the checks that establish what your own handset can do. For an imported or refurbished phone, get confirmation against its model number rather than assuming the standard iPhone 12 configuration.

What 64GB means for a travel eSIM

The 64GB figure is built-in storage, not mobile data. It neither enables eSIM nor sets the plan’s allowance. Downloaded maps, photos and apps use phone storage; your chosen plan has a separate data amount and validity period. Check both before leaving if you expect to save offline content.

Get ready to install

Install over reliable Wi-Fi and read the plan’s activation instructions first. A QR code is generally intended for one installation, so keep the order details and do not delete the profile unless the provider advises it.

1. Confirm EID, Add eSIM, and No SIM restrictions where applicable.
2. Check whether the plan can be installed before travel and when its validity begins.
3. Keep the QR code visible on another screen or on paper; have the confirmation code ready if supplied.
4. Decide whether to keep your primary line for calls and messages, and review its roaming terms.

Install and activate an eSIM on Apple iPhone 12 64GB

Apple’s current Set up eSIM on iPhone guidance supports QR-code setup and other provider-dependent methods. The instructions below describe the common QR-code path. Exact button names may differ slightly by iOS release, and the provider may offer an in-app installation flow instead.

QR-code setup

1. Open Settings. Tap Cellular or Mobile Data, then tap Add eSIM or Set Up Cellular.
2. Choose Use QR Code. If that option is behind an additional menu, choose the option to scan a QR code or use another method.
3. Scan the code. Hold the iPhone so the code from your provider is inside the camera frame. Follow the on-screen instructions. If asked for a confirmation code, enter the code provided with the eSIM details.
4. Add the plan. Review the prompt and tap Continue or Add Cellular Plan. Wait while the iPhone downloads the profile; keep the phone connected to the internet.
5. Label the line. Choose a label such as “Travel data” so you can distinguish it from your home line in Settings.
6. Choose your defaults. Keep your existing line as the default for calls and messages if that suits you. Select the travel eSIM for Cellular Data only when you are ready to use that plan.
7. Check data switching. If you want to avoid accidental use of your home plan for data, turn off Allow Cellular Data Switching. Confirm the home line’s roaming settings with your own provider as well.
8. Wait for activation. Some profiles connect shortly after installation; others become usable only at the plan’s stated time or after reaching the destination. Follow the provider’s activation instructions and allow a few minutes for the network to appear.

For more detail, follow the iOS eSIM installation guide. The Android installation guide is for Android phones and does not describe the iPhone menus.

Other installation methods

Depending on the provider, an eSIM may be assigned directly, activated through a link or installed in an app. Use only the method and details supplied for your plan. Moving a personal number from another iPhone is a separate process and can deactivate the old SIM when the transfer completes.

Use the eSIM for mobile data on a trip

After installation, the key setting is the line selected for cellular data. When you are ready to use the travel plan, open Settings → Cellular and confirm that the travel eSIM is turned on. Tap Cellular Data and select that eSIM. On a compatible plan, you may also need to turn on Data Roaming for the travel line. Follow the plan’s instructions: roaming may be required for a travel eSIM to connect, even though the data is charged according to the selected package rather than your home plan.

Before departure, you can leave the travel line installed and off if the provider’s instructions permit. At the destination, connect to Wi-Fi if needed, turn the line on, choose it for data and allow it to register. Avoid deleting the profile simply because it is not connected before the trip; deletion may require a new activation code. Your home SIM can remain enabled for calls or SMS if you want, but check its roaming settings and charges with your home provider.

An eSIM plan presented through Kaspersky eSIM Store is intended for mobile data unless the chosen plan explicitly says otherwise. Do not assume it supplies a normal phone number, cellular voice calls or SMS. You can continue to use messaging and calling apps over a data connection. The Kaspersky eSIM Store app and website let you choose, arrange and activate an eSIM plan for mobile data during an overseas trip; they do not determine the iPhone’s compatibility or replace the mobile network that carries the connection.

Practical travel scenarios

• Install at home, use on arrival: Install over Wi-Fi if allowed, then follow the plan’s instructions about when to turn the line on. Confirm whether validity starts at purchase, installation, a scheduled time or first connection.
• Keep your usual number reachable: Select the travel eSIM for data and leave the primary line configured for calls or texts if needed. Check home-provider roaming charges; turn off cellular data switching to reduce accidental data use on the home line.
• Visit more than one country: Check that every destination on your itinerary is included. A country-specific plan should not be assumed to work on the next leg. Review data amount, validity and activation conditions.
• Use maps and messaging: Download maps on Wi-Fi and limit automatic photo backup or video streaming over cellular. Device storage and mobile data allowance are separate.

If no destination-specific page is available in the supplied information, the Kaspersky eSIM Store homepage is a verified English fallback for browsing available destinations and current plan conditions. It is a general store link, not a page for a particular country or a guarantee that a plan is available for every trip.

Common problems and what to check

• “Add eSIM” is missing: Check EID and the model number in Settings → General → About. Restart and check for an iOS update, but remember software cannot add missing eSIM hardware. Ask Apple or the seller to identify the regional version.
• QR code will not scan: Clean the camera lens, increase the other screen’s brightness, and make sure the whole code is visible. Use an activation link or manual entry only if the provider supplies it.
• Profile installed, but no service: Confirm the eSIM line is on and selected for data. Toggle Airplane Mode, restart, move to an area with coverage, and check that the plan is active and includes your destination. Enable data roaming on the travel line if its instructions require it.
• “SIM unsupported” or locked: Check Settings → General → About → Carrier Lock. If the phone does not say No SIM restrictions, contact the provider that locked it; Apple cannot unlock it for that provider.
• Data uses the wrong line: Select the travel eSIM under Cellular Data, confirm it is turned on, and disable Allow Cellular Data Switching if desired. Verify usage in the plan account.
• Still no connection: Check the plan’s validity and destination, look for a carrier-settings prompt in About, then restart. Give support the error, model number and iOS version. Keep the full EID and QR code private.

Frequently asked questions

Does every Apple iPhone 12 64GB support eSIM?

No. The standard specification lists nano-SIM and eSIM, but regional iPhone 12 versions may have two physical nano-SIMs. Check the actual phone’s model number, EID and Add eSIM option.

Can I tell from the SIM tray?

No. The standard model has a physical tray and eSIM, while certain regional versions have two physical SIM positions. Check Settings instead.

Is 64GB the eSIM data allowance?

No. It is device storage. A travel plan has its own data allowance and validity terms.

Can I use eSIM and a physical SIM together?

On the eSIM-capable iPhone 12 configuration, a nano-SIM and eSIM can be used together. One line is selected for cellular data. A regional two-nano-SIM model does not gain eSIM support from having two SIM slots.

Does a travel eSIM replace my phone number?

Usually not. A data-only plan does not include a regular phone number, voice service or SMS unless its terms say so. Keep your primary line if you need its number and check roaming charges with that provider.

When should I install it?

Follow the plan instructions. You may install over Wi-Fi before departure and enable the line on arrival, but check when the plan’s validity starts. Installation, activation and first data use may be different events.

What if there is no EID?

Pause and verify the regional model with Apple or the seller. Do not buy a plan assuming an update can add eSIM capability.

Check the phone, then choose a travel eSIM

For Apple iPhone 12 64GB, start by confirming the exact regional model. Apple’s specifications support eSIM on the standard configuration, but Apple also documents iPhone 12 versions sold in mainland China, Hong Kong and Macao with two nano-SIM cards. The 64GB capacity does not settle which version you have.

Before selecting a plan, verify the EID and Add eSIM option, check that Carrier Lock says No SIM restrictions if you will use another provider, and confirm the plan covers your destination and travel dates. Once those checks are clear, use the iOS installation steps, select the travel eSIM for mobile data when appropriate, and review your home line’s roaming settings. You can then use the English Kaspersky eSIM Store website or app to explore available destinations and choose an eSIM plan for mobile data on your trip.