Are you worried about losing your phone number when switching carriers? With MNP (Mobile Number Portability), you can keep your current number when you switch to Rakuten Mobile. This guide explains the seamless “MNP One-Stop” process and provides essential tips for foreign residents on how to complete identity verification with your Residence Card.

1. What is MNP?

MNP allows you to transfer your existing phone number to a new carrier. When you complete the transfer to Rakuten Mobile, your previous service is automatically canceled, so there is no need to contact your old carrier to cancel your contract.

2. The 3-Step Transfer Process

Rakuten Mobile uses the “MNP One-Stop” system as the standard. For major carriers (including Docomo, au, SoftBank, ahamo, UQ mobile, and povo), you do not need to obtain an MNP reservation number in advance.

1. Apply Online: Select “Switching (MNP)” on the official Rakuten Mobile website and choose your current carrier. If they are an “One-Stop” partner, you can proceed without a reservation number.
2. Start the Transfer: After your SIM arrives (or if using eSIM), go to your application history in the “my Rakuten Mobile” app and select “Start MNP Transfer.”
3. Activation: Once you complete the activation process in the app, your service will switch to Rakuten Mobile.

*Important Note: If your current carrier is not part of the One-Stop system, or if you have already obtained an MNP reservation number, you must follow the traditional procedure. In this case, please ensure your reservation number has at least 7 days of validity remaining when you apply.

3. Tips for Smooth Identity Verification with Your Residence Card

Rakuten Mobile’s “AI Easy Identity Verification (eKYC)” allows you to verify your identity by taking photos of your documents. To ensure your application is approved, please follow these tips:

• Update Your Address: Ensure the address on the back of your Residence Card is current. If you have moved but haven’t updated your address at the city office, the information will not match, leading to potential delays.
• Photography Tips: Take photos in a well-lit area, avoiding glare or shadows. Ensure all four corners of the card are visible within the frame.
• Validity: Double-check that your period of stay has not expired.

4. Common Pitfalls for Foreign Residents

• Name Spelling: Ensure the name you enter matches the spelling on your Residence Card exactly, including spaces.
• Address Format: Enter your address exactly as it appears on your card (e.g., matching the specific formatting of chome/ban/gou).
• Name Consistency: The name on your Rakuten Mobile application must match the name on your current mobile contract.

5. Finalizing the Transfer

Once your SIM is ready, press the “Activate” button in the “my Rakuten Mobile” app. This triggers the automatic cancellation of your previous contract. Please note: Your previous service will stop working as soon as the switch to Rakuten Mobile is complete.

Summary: Switching is Easy When You Know the Steps

Switching carriers is simple if you prepare correctly. By ensuring your Residence Card information is up-to-date and following the steps above, you can keep your number and start enjoying Rakuten Mobile’s services without a hitch.

*Information is current as of September 2026. Please check the official Rakuten Mobile website for the latest procedures.

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