Is the iPhone 12 having an eSIM?

Yes, the iPhone 12 and all iPhone 12 variants (iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max) support eSIM. Every model can run one eSIM and one physical nano-SIM simultaneously, or dual eSIMs if you remove the physical SIM. US models from iPhone 14 onward are eSIM-only with no physical SIM slot.

If you're asking about the OnePlus 12, eSIM support depends on your regional variant — only certain carrier or region-specific models include eSIM. If you mean the iPhone 12, yes, it fully supports eSIM on all models worldwide. Always confirm your exact device model before purchasing an eSIM plan.

Can I convert my iPhone 12 to eSIM?

You don't convert the iPhone 12 itself; you convert your phone number from a physical SIM to an eSIM profile. Contact your carrier and request an eSIM QR code or use their app to transfer your number. Once installed, you can remove the physical SIM and run entirely on eSIM if you prefer.

What exactly is an eSIM?

An eSIM is a digital SIM embedded in your phone's hardware. Instead of inserting a plastic card, you download a carrier profile over the internet using a QR code or activation app. eSIMs let you switch carriers, add travel data plans, or run multiple numbers on one device without swapping physical SIM cards.

How many eSIMs can the iPhone 12 store?

The iPhone 12 can store multiple eSIM profiles (typically eight or more) but only one eSIM can be active at a time alongside the physical SIM, or you can activate two eSIMs simultaneously if you remove the physical card. You switch between stored profiles in Settings > Cellular without needing to download them again.

OnePlus 12 eSIM — Compatibility & Setup

Does the OnePlus 12 support eSIM?

OnePlus 12 eSIM compatibility varies by region

The OnePlus 12 has limited eSIM support depending on which regional variant you own. Most OnePlus 12 models sold in Asia, Europe, and other markets rely exclusively on physical nano-SIM cards and do not include eSIM functionality. However, certain carrier-specific or region-specific versions — particularly some sold through carriers in North America — may include eSIM support.

Because OnePlus has not uniformly enabled eSIM across all OnePlus 12 variants, you need to verify your specific model. Check your device's software settings (Settings > About device > SIM card status) or consult your carrier's documentation. If you purchased an unlocked international OnePlus 12, it likely does not support eSIM. If you're uncertain about your model's capabilities, confirm on the manufacturer's official spec sheet or contact OnePlus support directly — do not assume eSIM compatibility based on the OnePlus 12 name alone.

Dual SIM capability on compatible models

OnePlus 12 models that do support eSIM typically offer dual SIM functionality: one physical nano-SIM slot plus one eSIM profile. This lets you run two numbers simultaneously — useful for separating work and personal lines or adding a local data plan while traveling. Most OnePlus 12 units, however, offer dual physical SIM slots instead, so verify your variant before purchasing an eSIM plan.

How to set up an eSIM on the OnePlus 12

Set up an eSIM in Settings

If your OnePlus 12 supports eSIM, activating a new profile takes about sixty seconds. You'll receive a QR code from your carrier or eSIM provider (by email or in your account dashboard). Make sure you're connected to Wi-Fi, then follow these steps:

Open Settings and tap Wi-Fi & network (or SIM & network, depending on your OxygenOS version).
Tap SIM cards or SIMs.
Select Add eSIM or Download a SIM instead.
Tap Scan QR code and point your camera at the QR code provided by your carrier or eSIM plan.
Confirm the plan details and tap Download.
Once installed, label the line (e.g. "Travel Data" or "Work") so you can identify it easily.
Choose which SIM to use for mobile data, calls, and SMS in the SIM settings screen.

Switching between SIM profiles

After installation, you can toggle each SIM on or off, assign default roles (data, calls, messages), and manage both lines from the same SIM settings menu. If you want to temporarily disable your home SIM while abroad, turn it off and route all data through your eSIM to avoid roaming charges.

Using a travel eSIM on the OnePlus 12

Stay connected abroad without roaming fees

A travel eSIM is the simplest way to get affordable data when you're overseas — no hunting for SIM-card kiosks at the airport, no bill shock from international roaming. You install the eSIM profile before you fly, and it activates as soon as you land in your destination country. Your OnePlus 12 will use the eSIM for data while your home physical SIM remains active for calls and text messages (or you can disable it entirely to avoid roaming fees).

Travel eSIMs are available for single countries or regional bundles covering dozens of destinations. You choose the data allowance that fits your trip, install the QR code at home over Wi-Fi, and you're ready to go. Browse eSIM plans by destination to compare coverage and data packages.

Install your travel eSIM before departure

Always download and install your travel eSIM while you're still connected to Wi-Fi at home or at the airport. The eSIM won't consume data or incur charges until you enable it and arrive in the destination network. Once installed, label it clearly ("France Data" or "Europe Travel") so you know which profile to activate when you land.

Tips & troubleshooting

Turn on data roaming for the eSIM line

Travel eSIMs require data roaming to be enabled — this is not the same as your home carrier's roaming. Go to Settings > Wi-Fi & network > SIMs, tap your eSIM profile, and toggle Roaming on. Your eSIM provider's network is technically "roaming" even though you're using a local plan, so the switch must be enabled for data to work.

Keep your home SIM active for calls and two-factor authentication

If you're traveling and want to receive calls or SMS verification codes on your home number, leave that physical SIM enabled but set your eSIM as the default for mobile data. This way you avoid data-roaming fees but still get important messages. Just make sure "Mobile data" is assigned to the eSIM in your SIM settings.

What to do if the QR code won't scan

If the camera won't read the QR code, check that you've granted the Settings app camera permissions. Alternatively, most eSIM providers offer manual entry: look for an "Enter details manually" or "Enter activation code" option in the SIM download screen, then type the SM-DP+ address and activation code from your eSIM email. If you continue to have trouble, eSIM setup help can walk you through alternative activation methods.

Confirm your OnePlus 12 variant before buying an eSIM

Because eSIM support on the OnePlus 12 is not universal, double-check that your specific model lists eSIM in its technical specifications before purchasing a plan. You can check another device's eSIM compatibility if you're considering a different phone or want to compare models. If your OnePlus 12 does not support eSIM, you'll need to use a physical travel SIM card or consider upgrading to an eSIM-capable device for future trips.

OnePlus 12 eSIM