Does the iPhone 16 Plus have eSIM?

Short version

The iPhone 16 Plus has eSIM. The units Apple sold in the United States have no SIM tray, so eSIM is the only way a line reaches the phone. Units sold elsewhere kept the tray.

That is the hardware settled. Now the part that actually generates complaints.

The hardware is rarely what stops you

When someone tells us a travel eSIM was refused by a modern iPhone, the phone is almost never the problem. The chip is there, the software supports it, and the profile is valid. What blocks it is a carrier lock — a restriction the seller applied so the handset only accepts lines from them.

A lock is invisible until you try. The phone works perfectly on its home network, and then rejects a third-party profile with an unhelpful message. Nothing you can change in Settings will get past it.

This is a bigger deal on the Plus than on a phone bought outright, simply because large-screen models are often sold on instalment plans, and instalment plans are where locks live.

Checking for a lock before you travel

Open Settings → General → About and scroll to the Carrier Lock line.

• No SIM restrictions — you are fine. Any eSIM should install.
• Anything naming a carrier — the phone is locked to them.

Unlocking is a request to the carrier, not a setting. Most will do it once the device is paid off, and the usual sticking point is an outstanding instalment balance rather than any policy. Allow days, not hours — this is not something to start the week you fly.

Second-hand and gifted handsets

A used iPhone 16 Plus needs three checks, in this order:

The EID check is close to a formality on a handset this recent, but it takes five seconds and it proves the modem is reporting properly.

There is a fourth check that has nothing to do with eSIM but ends more used-phone purchases than locks do: Activation Lock. If the previous owner did not sign out of their Apple account, the phone is tied to them and cannot be set up at all. Ask the seller to complete a full erase in front of you and let the setup screen appear.

If the phone came from a family member's upgrade, ask whether it was ever on contract. People forget, and the answer sits on the carrier's account rather than on the box.

What the eSIM itself needs

Almost nothing. A profile installs over WiFi in about a minute, and once installed it sits under Settings → Mobile Data as another line you can switch on and off.

The parts worth planning:

• Install before you fly, on a connection you trust.
• Leave the home line on for calls and texts, with data roaming off.
• Check whether your plan starts on install or on first use abroad — providers differ, and the difference is real money on a short plan.

We list what we have tested at /cheapest-esim/, and country-by-country pricing lives in the guides — Spain is a typical one. For other handsets, the eSIM phone checker is quicker than searching model numbers.

If it turns out to be locked

You have three options and no fourth: get it unlocked by the carrier, roam on your existing plan and accept the cost, or use WiFi and a hotspot from someone else's phone. On a US unit with no tray, the local-SIM workaround is not available to you at all.

Start the unlock request as soon as you know you are travelling. Carriers generally handle these in days rather than minutes, they often want the account holder rather than the phone's user to ask, and none of them treat "my flight is Tuesday" as a reason to hurry.

If the trip is too close for that, roaming on your existing plan is the least bad fallback. It is rarely good value, but it is predictable, and it needs nothing installed.