How to Get a Japanese Phone Number Without a Bank Account

If you just arrived in Japan and Googled "Japan SIM card," you probably found dozens of articles about tourist eSIMs. Those give you data — but not a Japanese phone number. And that number is what you actually need. Without it, you can't open a bank account (SMS verification), register for government apps (Mynaportal), sign utility contracts, or receive delivery notifications.

The chicken-and-egg problem is real: banks want a phone number, and some phone carriers seem to want a bank account for autopay. But several carriers accept credit cards — including overseas ones — which breaks the loop. Here's how.

Why Tourist eSIMs Don't Count

Tourist eSIMs and prepaid data SIMs (Ubigi, Airalo, Sakura Mobile tourist plans) provide mobile data but no Japanese phone number. This means:

• Banks cannot send you SMS verification codes
• You can't register for Mynaportal (マイナポータル) or other government services
• Delivery services (Yamato, Sagawa) can't call you
• You can't sign up for most Japanese apps that require phone verification

A resident mobile contract gives you an 070/080/090 Japanese number tied to your identity. This is the number that unlocks everything else.

What You Actually Need to Sign Up

Requirement	Details
Residence card (在留カード)	Valid, with current address registered
Payment method	Credit or debit card (Japanese or overseas). Some carriers accept convenience store payment
Email address	Any email works — Gmail, etc.

That's it. You do not need a Japanese bank account, a My Number Card, or a hanko. If you have your residence card and a Visa/Mastercard from your home country, you can sign up today.

Carrier Comparison for Foreign Residents

Carrier	Monthly Cost (tax incl.)	English Support	Overseas Card OK?	Contract
Rakuten Mobile	¥1,078 (3 GB) – ¥3,278 (unlimited)	Full (app, web, phone, shop)	Yes (Visa/MC, may vary by issuer)	No minimum
LINEMO (SoftBank)	¥990 (3 GB) – ¥2,970 (30 GB)	English guide available	Limited	No minimum
ahamo (Docomo)	¥2,970 (30 GB) – ¥4,950 (110 GB)	Japanese only	Japanese cards preferred	No minimum
IIJmio	¥858 (2 GB) – ¥2,068 (20 GB)	Japanese only	Japanese cards preferred	No minimum

Prices current as of April 2026. All carriers listed are on major networks (Rakuten/Docomo/SoftBank/Docomo+au) with nationwide coverage.

Rakuten Mobile — The Easiest Path in English

Rakuten Mobile is the most foreigner-friendly carrier in Japan. The entire process — from signup to identity verification to eSIM activation — can be completed in English online. Here's the sequence:

1. Go to the Rakuten Mobile website (English available)
2. Choose the Rakuten Strongest Plan and select eSIM or physical SIM
3. Upload photos of your residence card (front and back) for identity verification
4. Enter your credit or debit card details for payment
5. If you chose eSIM, activation is same-day — scan the QR code and your Japanese number is live
6. Physical SIM cards ship to your address in 2–3 days

Rakuten also has physical shops in major cities with multilingual staff (English, Chinese, Korean, Vietnamese, Portuguese, Spanish). If online verification fails — which happens with some overseas cards — visiting a shop usually resolves it.

If You Don't Have a Credit Card

Some new arrivals don't have a credit card at all — or their overseas card gets declined during online signup. Options:

• Rakuten Mobile shop — in-store staff can try alternative payment processing and troubleshoot card issues on the spot
• Mobal Japan — accepts PayPal and Alipay in addition to credit cards. Plans start around ¥1,100/month. English support included
• Ask your employer — many companies help new foreign employees set up a phone contract as part of onboarding, sometimes using the company as the billing guarantor

If navigating carrier websites in Japanese feels impossible, or your overseas card keeps getting rejected, that's a common frustration — and one that LO-PAL can help with. Post your question for free and a local Japanese person can walk you through the options for your specific situation. If you need someone to go with you to a phone shop, you can request that as a task — you only pay when it's done.

After Sign-Up — What to Set Up Next

Once you have a Japanese phone number, you can immediately:

1. Open a bank account — Japan Post Bank or SBI Shinsei Bank. See our bank account guide
2. Register for Mynaportal — link your My Number Card to government services via the app
3. Set up utility contracts — electricity, gas, and water all require a contact number
4. Enable two-factor authentication — for banking, email, and other accounts that use SMS verification

The phone number is the first domino. Everything else falls into place after it.

Related Articles

• First Year in Japan? 7 Things Every Foreigner Sets Up Too Late — The full first-year admin sequence
• How to Open a Bank Account in Japan Before the 6-Month Mark — Next step after getting your phone
• Best Translation Apps for Foreign Residents in Japan — Essential tools once your phone is set up

Ask a Local — It's Free

Phone contracts in Japan are full of fine print, and carrier websites love burying the English toggle. If you're stuck — declined card, confusing plan options, or a shop that won't serve you in English — post your question on LO-PAL for free. Local Japanese people in your area can recommend the right carrier, translate at the shop, or even handle the signup with you. You only pay if you request task help.