How to Get a Mobile Phone and SIM Card in Japan

Choosing Between Prepaid and Contract Plans

Your choice depends entirely on how long you plan to stay in Japan. If you are visiting for a few weeks, a prepaid SIM card is the most practical option. These can be purchased at major airports like Narita International Airport or Haneda Airport, or ordered online for pickup or delivery. These plans offer a set amount of data and do not require a long-term contract.

For those moving to Japan long-term, signing up with a major carrier or a Mobile Virtual Network Operator (MVNO) is better. Major carriers include NTT Docomo, SoftBank, and au. These providers offer extensive coverage and bundled services. If you want more affordable monthly rates, look into MVNOs or newer providers like Rakuten Mobile, which operate their own network but also utilize roaming partners.

Required Documents and Identity Verification

Japan has strict regulations regarding mobile phone contracts to prevent fraud. If you are a resident, you must present your Residence Card (Zairyu Card). If you are a tourist, your Passport is required. Note that some providers may have specific requirements regarding the length of your visa or residency status.

Payment methods are also a hurdle. Most major carriers prefer a Japanese credit card or a Japanese bank account for monthly automatic withdrawals. Some providers may accept international credit cards, but this is not guaranteed and varies by shop and provider. Always check with the specific provider regarding their accepted payment methods before visiting a store.

Buying a Device vs. Bringing Your Own

You have two main options: buying a new handset in Japan or using your current phone. If you bring your own phone, it must be "SIM-free" or "unlocked." If your phone is locked to a specific carrier from your home country, it will not work with a Japanese SIM card. You can check your phone's compatibility by contacting your original provider.

If you choose to buy a phone in Japan, you can do so at electronics retailers like Bic Camera or Yodobashi Camera. Buying a phone and a SIM contract together is often convenient, but be aware that installment plans for devices are usually tied to a multi-year contract. Always ask for the total cost, including the initial activation fee, which is common in Japan.

Good to know

• eSIM availability: Many providers now offer eSIMs, which allow you to activate a data plan without waiting for a physical card to arrive.

• Data limits: Most "unlimited" plans have a Fair Usage Policy; if you use an extreme amount of data in a short time, your speed may be throttled.

• Fees: Expect to pay an initial administrative or activation fee when starting a new contract.

• Coverage: While major carriers have excellent coverage, some MVNOs may experience slower speeds during peak hours in crowded areas.

Official information

• Immigration Services Agency of Japan
• CLAIR – Multilingual Living Information
• Digital Agency (My Number)

Rules and fees can change. Please confirm the latest details with the official sources above.