What to prepare before switching
Before switching, gather: a valid residence card (在留カード) or accepted ID, your current Japanese address, a Japanese phone number, and bank account details for billing. If you want to keep your current phone number, request an MNP transfer code from your current carrier before canceling.
For eSIM, make sure your phone supports eSIM and keep a Wi-Fi connection during setup. For a physical SIM, wait until the card arrives by mail before canceling your old plan.
Rakuten Mobile: Unlimited data ¥3,278/mo or under 3GB ¥1,078/mo (tax incl.).
How to register and transfer your number (MNP)
Visit the official Rakuten Mobile website and select 'お申し込み' (Apply). Choose the Rakuten Saikyou Plan, select SIM type (physical or eSIM), and enter your MNP code if keeping your old number. Complete identity verification through the My Rakuten Mobile app or by uploading photos of your documents.
After completing the application, Rakuten will process it within minutes to a few hours. With eSIM you receive a QR code to activate immediately. With a physical SIM, allow 3–5 business days for delivery by post.
After switching: what to check
Once your SIM is active, download Rakuten Link for free domestic calls and texts. Sign in with your Rakuten ID to review your monthly invoice and accumulated points. Check coverage at home and work during the first week to confirm signal quality.
If you also use a Rakuten Card and Rakuten Ichiba, paying your mobile bill with the Rakuten Card boosts your SPU multiplier. This is why many foreign residents choose both services together.
How to use this guide in real life
Read "How to Switch to Rakuten Mobile" as a practical checklist, not as advertising. Foreign residents in Japan differ by visa status, Japanese ability, income, address history, phone usage, and spending habits, so the same service can be excellent for one person and only average for another.
Start by connecting the article to one concrete goal. If your goal is lowering fixed costs, focus first on mobile bills, recurring payments, and services you already pay for every month. If your goal is earning points, check where you actually shop before adding another account or card.
Before taking action, write down three numbers: what you pay now, what the new option may cost, and what conditions are required to receive points or discounts. This simple comparison prevents you from choosing only because a campaign looks large on the surface.
When using Rakuten services, keep one Rakuten ID as your main account whenever possible. Multiple accounts can split points, campaign entries, purchase history, and service conditions, which makes the ecosystem harder to manage and can reduce the benefits you receive.
What to check before you decide
Check your documents first. Your name, birth date, address, identity document, residence card, bank information, and payment method should be consistent. Many foreign residents are not rejected because they are ineligible; they run into trouble because details do not match across systems.
Confirm the latest official conditions before applying. Prices, point campaigns, entry requirements, and eligibility rules can change. Treat this article as an explanation of how to think, then verify the exact current terms on the provider's official page.
Avoid signing up for many services at once before you understand how they connect. A safer order is to begin with one clearly useful service, use it for a few weeks, then add card payments, banking, QR payment, or investing only if those steps fit your real life.
For the topic "A step-by-step guide to switching from your current carrier to Rakuten Mobile, covering MNP number transfer, required documents, and setup after switching.", the practical conclusion is simple: a benefit matters only when it lowers real costs or makes your money easier to manage. If a point program pushes you to overspend, buy things you do not need, or lose track of deadlines, it is no longer otoku.