Refurbished Phone & Japan eSIM: Check Compatibility 2026

Buying a refurbished phone for your Japan trip is a smart move: you save several hundred euros and still get a device that runs Google Maps, Google Translate and your eSIM without a hitch. But there is a trap hiding behind the bargain — not every refurbished model handles eSIM, and some regional versions don't have the chip at all. This guide shows you exactly how to check the eSIM compatibility of a refurbished phone before you book your flight, then how to set up your Japan eSIM on it in five minutes.

Why eSIM support is never guaranteed on a refurbished phone

When you buy a brand-new phone, the seller guarantees the exact spec sheet of that model. With a refurbished phone, you inherit a device whose origin, regional version and carrier history are sometimes unclear. That is where eSIM support can slip through your fingers. A single commercial name — "iPhone 13" or "Galaxy S21" — covers several hardware variants depending on the country where it first shipped, and not all of them support eSIM.

Three factors decide whether your refurbished phone will accept a Japan eSIM. The first is the age of the model: eSIM only reached mainstream smartphones from 2018 onward. The second is the regional version: an iPhone bought in mainland China physically has no eSIM chip — it carries two physical SIM trays instead. The third is the carrier lock, the infamous SIM lock that stops the device from accepting any network outside the original carrier.

The good news is that all three points can be checked in a few minutes, before you even buy, using the information any serious seller (Back Market, Swappie, Amazon Renewed, Apple Certified Refurbished) must provide. First, a quick reminder of what an embedded SIM actually is: our technical guide to the eSIM covers how it works. The PlanJapan eSIM is a data-only eSIM: it brings mobile internet in Japan, with no Japanese phone number, and runs alongside your personal SIM thanks to dual-SIM. You keep WhatsApp, iMessage and your banking SMS on your usual line.

Which refurbished models handle eSIM

The rule is easy to remember. On the Apple side, every iPhone from the iPhone XS, XS Max and XR (released in 2018) includes eSIM. That covers the iPhone 11, 12, 13, 14, 15, 16 and 17, plus the 2nd- and 3rd-generation iPhone SE. Because the refurbished market revolves mostly around the iPhone 11 to 13, you almost always land on a compatible model. Apple's official list of eSIM-compatible iPhones is the reference if you are unsure.

On the Google side, eSIM starts with the Pixel 3 (2018), then spreads across the Pixel 4, 5, 6, 7, 8 and 9. One caveat: some Pixel 3 units sold in Asia (Japan in particular, via SoftBank) shipped without eSIM enabled. Google documents compatibility model by model on its Pixel help center. At Samsung, eSIM appears reliably from the Galaxy S20 (2020), then on the S21, S22, S23, S24 and S25, the Note 20, and the Z Fold and Z Flip foldables. Earlier Galaxy phones (S10 and before) have no eSIM, even refurbished.

To go further, our dedicated guides list every reference: eSIM iPhone compatibility model by model and the eSIM guide for Samsung Galaxy and Android. If your refurbished phone predates these turning-point generations, read our article on what to do when the phone isn't eSIM-compatible: you can travel with an old phone as a backup, or borrow a compatible device.

The regional-version and eSIM-only trap

This is the point 90 % of buyers miss, and the one that ruins the most trips. The same model can exist in several hardware variants depending on the market where it first shipped new — and a refurbished phone inherits that variant.

Case one: the Chinese iPhone. In mainland China, regulation mandates a dual physical SIM tray. iPhones sold there (references often ending in "CH/A") therefore have no eSIM chip at all. A refurbished iPhone 13 imported from China will be perfect for your two physical cards, but will refuse any eSIM. You cannot install a Japan eSIM on it: this isn't a setting, it's the physical absence of the component.

Case two, at the opposite end: the US iPhone. Since the iPhone 14, models sold in the United States are eSIM-only — they no longer have any physical SIM tray. Great news for the Japan eSIM, which installs without a hitch. But it changes your dual-SIM setup: you can't slot your home SIM into it, so you'll need to convert your personal line to an eSIM too, or keep two eSIMs. Our dual-SIM guide for Japan explains how to split your personal line and the data eSIM depending on your hardware.

For Galaxy and Pixel phones, the regional risk is lower but real on units sold by certain Japanese or US carriers, which sometimes disabled eSIM. Here too, the exact model number and a quick settings check clear up any doubt. In settings, a compatible iPhone shows an "EID" under Settings > General > About; a compatible Android offers "Add eSIM" or "Add plan" in the network settings.

Check the carrier lock before buying

A phone can be perfectly eSIM-compatible on paper and still refuse your Japan eSIM: that's the carrier lock. A SIM-locked or carrier-locked device only accepts the network of the carrier that originally sold it — a refurbished phone bought back from a carrier customer can arrive locked if the unlock was never done.

Most serious refurbishers sell devices already carrier-unlocked and state it clearly ("unlocked", "SIM-free"). But confirm it in writing before you pay. On iPhone, open Settings > General > About: the "Carrier Lock" line must read "No SIM restrictions". On Android, the status appears in settings or via a SIM card from another network. Our guide to carrier unlocking for the Japan eSIM details each scenario, and the article on locked phones explains how to request the unlock.

"eSIM-compatible means nothing if the phone stays locked to a carrier: both conditions have to be met."

In practice, a refurbished iPhone 12 bought on Back Market as "unlocked" will accept your PlanJapan eSIM the moment you land. The same iPhone 12 sold second-hand by a private seller, still tied to an unpaid Verizon or EE contract, may refuse the eSIM until the carrier unlock is done. It's a free check that saves you from a trip with no connection.

Which Japan eSIM plan to pick by trip length

Once your refurbished phone checks out, you still need the right plan. The PlanJapan eSIM runs on the NTT Docomo network, which covers 99.9 % of Japanese territory — from Shibuya to the Tohoku countryside and out to the Okinawa islands. You choose the plan by trip length and usage, not by your phone brand. Here is our recommendation grid.

The classic data plans (10, 20 and 50 GB) are valid for 30 days once activated and are data-only. The unlimited plan comes in versions from 10 to 30 days, with unlimited hotspot — ideal if you plan to share the connection from your refurbished phone to a laptop or a second device. There is also a monthly subscription at €34.99 / month (50 GB / month) for long stays and digital nomads. For a first trip, our step-by-step activation guide walks you through it, and the comparison of Japanese carriers explains why the Docomo network stays the safe bet.

Activate your eSIM on the refurbished phone

Activation on a refurbished phone is identical to a brand-new device, once compatibility and unlock are confirmed. You receive a QR code by email after purchase. The best approach is to install the eSIM at home, 2 to 3 days before departure, then activate it on the day of your flight or on arrival. Classic data plans give you 180 days to activate, unlimited plans 30 days — no need to rush.

The typical scenario: you land at Narita at 3 p.m. after a flight from London. You take your refurbished iPhone 12 out of airplane mode, enable data on the PlanJapan eSIM, and Google Maps connects to the NTT Docomo network while you head to the JR East counter. No queue at the SIM desk, no Pocket WiFi to pick up, no roaming bill shock. Your home SIM stays in the phone to receive a banking SMS if needed, and the eSIM handles all the data traffic during the trip. If the signal is slow to appear, our compatibility troubleshooting page covers the most common cases.

FAQ — refurbished phones and the Japan eSIM

Is a refurbished phone compatible with the Japan eSIM?

Yes, as long as the model includes eSIM (iPhone XS and newer, Pixel 3+, Galaxy S20+) and it is carrier-unlocked. Most refurbished phones sold by Back Market, Swappie or Apple Certified Refurbished meet both conditions. Always check the exact model number before buying.

How do I know if my refurbished phone has eSIM?

On iPhone, go to Settings > General > About: the presence of an "EID" confirms eSIM. On Android, look for "Add eSIM" or "Add plan" in the network settings. You can also check the model number on the manufacturer's website.

Why do some refurbished iPhones have no eSIM?

Because they come from mainland China, where the law mandates two physical SIM trays instead of the eSIM chip. These models (references often ending in "CH/A") cannot take an eSIM. It's a hardware absence, not a setting you can change.

Does a refurbished US iPhone work with a Japan eSIM?

Yes, very well. Since the iPhone 14, US models are eSIM-only: they accept the PlanJapan eSIM perfectly. However, with no physical tray, you'll need to convert your home line to an eSIM or run two eSIMs in parallel to keep your number.

What if my refurbished phone is carrier-locked?

A carrier-locked phone refuses an outside eSIM. Ask the former carrier or the refurbisher to unlock it; it is often free. On iPhone, the "Carrier Lock" line must read "No SIM restrictions" before you travel.

Can I keep my home number on a refurbished phone in Japan?

Yes. Thanks to dual-SIM, your personal SIM or eSIM stays active for calls, SMS and WhatsApp, while the PlanJapan eSIM handles only data in Japan. That's the standard setup, except on eSIM-only US iPhones where your home line must also become an eSIM.

Which plan should I pick for a first two-week trip?

For two weeks of normal use, the 50 GB plan (10 days or more) or the unlimited plan are the most comfortable. The 50 GB covers Maps, social media and a bit of hotspot; unlimited frees you from tracking usage entirely. The 20 GB suits one week.

Is 2 GB enough for two weeks in Japan?

No. PlanJapan doesn't offer a plan that small, and it wouldn't be enough: Google Maps and translation burn through data quickly. The catalogue starts at 10 GB, suited to 5 days or less, and goes up to unlimited for long stays.