2026 Complete Guide

How to Get a SIM Card in Japan as a Foreigner

If you only read this part

If you have a residence card and are staying in Japan more than 90 days, the best-value plans are LINEMO (¥990 for 3GB, ¥2,970 for 30GB with 5-min calls), povo 2.0 (¥0 base + data on demand), and Rakuten Mobile (¥1,078 to ¥3,278, unlimited at the top). For most foreign residents we recommend LINEMO — the English-friendliest of the three, on SoftBank's network, with PayPay payment.

If you are a tourist or have just arrived and don't have a residence card yet, use an eSIM (Airalo, Ubigi) for the first few days, then switch when your card arrives. Skip the airport prepaid SIM — eSIM is faster and cheaper.

Section 01

First, figure out which lane you're in.

Japan's mobile market has two very different sides. The cheap, well-known carriers (LINEMO, povo, ahamo, Rakuten) only work if you have a residence card. Everything else is either expensive, slow, or both. Pick your lane before you start comparing prices.

Lane A

14 days or less

You're visiting. Use an eSIM from your home country before you fly out. ¥1,500–3,000 for the whole trip.

Lane B

15–90 days, no residence card

Student exchange, working holiday, longer stays. Use a foreigner-focused carrier (Mobal, Sakura Mobile) or extend your eSIM.

Lane C

Resident with 在留カード

You live here. Go straight to a domestic plan — LINEMO, povo, ahamo, or Rakuten Mobile. This is where the real savings are.

If you're in lane C, the rest of this guide is for you. Lanes A and B are covered briefly below — but the short answer is "use an eSIM and don't overthink it."

Section 02

What you need before signing up.

Domestic Japanese carriers run real KYC. Walking up unprepared usually means going home and trying again. Here's the checklist that gets you through on the first attempt:

  • Residence card (在留カード) Front and back. Issued at the airport on arrival if your visa is 3 months or longer. Your name and address must be readable — if your address on the back is handwritten, double-check it matches what's printed elsewhere.
  • A Japanese address that matches the residence card If you've moved since arrival, update your address at the ward office before applying. Carriers reject applications where the address on file doesn't match.
  • A Japanese-issued credit card or bank account in your own name This is the single biggest tripwire. Most carriers don't accept foreign cards. If you don't have a Japanese card yet, see Mobal in section 3 — they accept PayPal and foreign cards.
  • A working email address and a smartphone for eKYC Most online sign-ups use eKYC — you point your camera at your face and the residence card. Have good lighting. Don't wear a hat or glasses.
  • An unlocked phone Check that your handset is carrier-unlocked and supports LTE bands 1, 3, 19, 28 plus n77/n78 for 5G. Most iPhones from iPhone 7 onwards and most flagship Androids are fine.

Section 03

Tourist & short-stay options.

If you don't have a residence card — either because you're visiting or because you're brand new and waiting on paperwork — you have three realistic paths.

eSIM (recommended for almost everyone)

An eSIM activates over Wi-Fi in 5–10 minutes and you can buy it before you board your flight. Airalo, Ubigi, and Saily all sell Japan plans starting around US$5 for 1GB / 7 days. They run on the real domestic networks (mostly SoftBank or NTT docomo) so speed is genuinely good. The only requirement is an eSIM-capable phone — every iPhone from XS onwards, and most flagship Android phones from the last four years.

Going to Japan in the next 30 days? An Airalo eSIM is the cheapest, fastest way to get online the moment you land. No SIM swap, no airport queue.
Get an Airalo eSIM

Foreigner-focused carriers (Mobal, Sakura Mobile)

If you're staying 1–6 months — exchange student, working holiday, longer business trip — and need a real Japanese phone number, Mobal and Sakura Mobile are the safest options. They have English-only sign-up, English support, and accept foreign credit cards. Mobal in particular lets you sign up before you arrive and pick up the SIM at the airport. The trade-off is price: expect ¥3,000–5,000/month, compared to ¥990 for a comparable domestic plan.

Need a phone number before you arrive? Mobal ships SIMs to your home country or holds them at the airport. Full English support.
Compare Mobal plans

Pocket Wi-Fi (skip it)

Pocket Wi-Fi rentals were the standard answer in 2018. In 2026 they make almost no sense for solo travelers — they're another device to charge, lose, and return. They still make sense for groups of 3+ sharing one connection, or if you're carrying a laptop that can't connect to your phone's hotspot.

Section 04

The comparison: best SIMs for foreign residents.

All prices verified directly from each carrier's official site in June 2026. All four of these run on one of Japan's three major networks — coverage is broadly excellent in cities, and only differs meaningfully in rural areas.

Carrier Cheap plan Standard plan Network English eSIM Action
LINEMO
SoftBank online brand
¥990 / 3GB ¥2,970 / 30GB
incl. 5-min calls
SoftBank Friendly Yes Sign up
povo 2.0
au / KDDI
¥0 base
+ data on demand
¥2,700 / 30 days, 20GB au / KDDI Japanese only Yes Sign up
Rakuten Mobile
Saikyo Plan
¥1,078 / 3GB ¥3,278 / unlimited
tiered, pay what you use
Rakuten + au roaming English phone support Yes Sign up
ahamo
docomo online brand
¥2,970 / 30GB
incl. 5-min calls + intl. roaming
NTT docomo Japanese only Yes, but rejection risk for non-PR Sign up
Mobal
foreigner-focused
¥1,650 / 1GB ¥3,190 / 5GB SoftBank Full English Yes Sign up
All prices in JPY, tax included. Verified June 2026.

How to read this table

If price is everything: LINEMO at ¥990 or povo's ¥0 base are unbeatable. povo is cheaper if you genuinely use less than 3GB/month — most people don't, once they actually measure.

If you want one fixed monthly bill: LINEMO ¥2,970 or ahamo ¥2,970 — both give you 30GB and 5-minute calls included. Same price, different networks.

If you travel inside Japan a lot: ahamo (docomo) has the best rural coverage. LINEMO (SoftBank) is excellent in cities, weaker in remote areas. Rakuten is fine in cities, falls back to au's 5GB cap outside.

If you have no Japanese credit card yet: Mobal. It's the only carrier in this list that accepts foreign cards and PayPal.

Section 05 · The Pick

For most foreign residents, the answer is LINEMO.

Honest disclosure: we get a small commission if you sign up via the links on this site. We're recommending LINEMO because we use it ourselves, not because the commission is highest — it isn't.

Why we keep coming back

¥990 → ¥2,970

Same plan flexes from light user (3GB) to heavy user (30GB) without a contract change. SoftBank network quality is excellent in every city we've tested. eSIM activation in <15 minutes. English-friendly online sign-up. PayPay integration means your phone bill, your konbini run, and your rent split all live in one app.

Where it falls short

Not perfect for everyone.

If you live deep in rural Japan, ahamo's docomo network is more reliable. If you use less than 1GB a month, povo's ¥0 base is cheaper. If you don't have a Japanese credit card yet, Mobal is the only realistic option for your first few weeks.

Sign up for LINEMO

Section 06

Step-by-step: how to sign up.

The flow is the same for LINEMO, povo, Rakuten, and ahamo, with small UI differences. Walking through LINEMO here because it's the most English-friendly. Plan 30–45 minutes.

  1. Get your documents together

    Residence card (front and back), a Japanese-issued credit card, your current address — make sure it matches the address printed on the back of your residence card. If it doesn't, update at the ward office first.

  2. Open the carrier site on your phone

    LINEMO's English-language sign-up page is at linemo.jp/en/. Pick your plan — Best Plan (3/10GB) or Best Plan V (20/30GB with calls).

  3. Choose eSIM or physical SIM

    eSIM is faster — same-day activation, no shipping. Physical SIM is safer if you've had issues with eSIM transfers in the past, or if you're keeping your old number active until the switch is fully confirmed.

  4. Enter your details and run eKYC

    You'll photograph your residence card (front, back, tilted) and your face. Good lighting, no hat, no glasses. The system rejects bad photos — retake until it accepts.

  5. Pay and wait for activation

    Credit card details go in next. eSIM activation usually completes within 1–2 hours. Physical SIM ships in 2–3 business days.

  6. Set up the SIM on your phone

    For eSIM: scan the QR code, follow the prompts. For physical SIM: insert it, then enter the APN settings the carrier sends you. iPhones usually configure automatically; some Android phones need manual APN entry.

  7. (If switching) port your old number

    If you're moving from another carrier, request an MNP reservation number from your existing carrier before applying. Most carriers issue it in their app. The MNP number is valid for 15 days. Use it during sign-up to keep your phone number.

Ready to sign up? LINEMO's English sign-up page handles everything from plan selection to eKYC. Most people finish in under 30 minutes.
Start LINEMO sign-up

Section 07

eSIM vs physical SIM: which one?

The honest answer: eSIM, almost always. The exceptions are narrow but worth knowing.

Choose eSIM if…

You have an iPhone XS or newer, or a flagship Android from the last four years. You want activation in under an hour. You're comfortable scanning a QR code. You don't need to swap the SIM into a second phone regularly.

Choose physical SIM if…

You frequently swap your SIM between phones (for example, a work phone and a personal phone). You've had eSIM transfer issues in the past — some older Android models still don't handle eSIM cleanly. Your phone doesn't support eSIM (rare in 2026, but check first).

One thing to know about eSIM and phone changes

If you change phones, eSIM transfer requires you to re-run KYC or contact support — it's not as simple as moving a physical chip. Carriers have gotten better at this, but it's still 15–30 minutes of admin. Plan for it before you sell your old phone.

Section 08

Frequently asked questions.

Can I get a SIM without a residence card?

For LINEMO, povo, ahamo, and Rakuten: no. They require a Japanese residence card. For Mobal, Sakura Mobile, and travel eSIMs (Airalo, Ubigi): yes — passport-only or pre-arrival sign-up is accepted. Use one of those for your first few weeks, then switch to a domestic carrier once your residence card arrives.

Do I need a Japanese bank account or credit card?

For domestic carriers, yes — almost always. They reject foreign-issued cards. Mobal is the main exception and accepts PayPal and international cards. If you don't have a Japanese card yet, start with Mobal, then move once your bank setup is done.

Will my phone work in Japan?

Most modern unlocked phones do. Japan uses LTE bands 1, 3, 19, and 28, plus n77/n78 for 5G. iPhone 7 and newer, and most flagship Androids from the last 4–5 years, are fine. Check your specific model on willmyphonework.net before signing up. If you bought your phone locked to a US, UK, or EU carrier, contact that carrier to unlock it before you leave.

Is English customer support actually available?

Honest answer: it varies. LINEMO's online sign-up is English-friendly but post-sale support is mostly Japanese. Rakuten has English phone support on weekdays during business hours. ahamo and povo are Japanese-first — bring a friend or use a translator. Mobal and Sakura Mobile have full English support but charge more for it.

What happens when I leave Japan?

All four major carriers (LINEMO, povo, ahamo, Rakuten) have no contract lock-in and no cancellation fee. Cancel online via the app. The catch: cancel before you leave Japan. Cancelling from overseas, after your residence card expires, is much harder. Set a calendar reminder.

Can I keep my number when switching carriers (MNP)?

Yes. Get an MNP reservation number from your current carrier (usually inside their app, free, takes 5 minutes). Use it when applying for the new carrier. Your number transfers within 1–2 business days. The MNP number is valid for 15 days, so don't request it too early.

Is Rakuten Mobile's network reliable?

It's improved a lot since 2023. In central Tokyo, Osaka, and Fukuoka the experience is good. Outside major metros you fall back to au's network, capped at 5GB before throttling. If you commute to suburban or rural areas, ahamo (docomo) is the safer choice. If you mostly stay in cities, Rakuten's unlimited plan at ¥3,278 is hard to beat on price.

Is 5G included?

Yes, on all four major carriers (LINEMO, povo, ahamo, Rakuten) at no extra cost. Your phone needs to support n77 or n78 — the sub-6 5G bands used in Japan. Most iPhones from 12 onwards and most flagship Android phones from 2021 onwards support these.

Next step

The short version.

If you live in Japan, have a residence card, and want a plan you don't have to think about: LINEMO at ¥990 or ¥2,970, depending on how much data you use. If you're brand new and don't have a Japanese card yet, start with Mobal and switch later. If you're visiting Japan for a trip, get an Airalo eSIM before you fly.