Rakuten Mobile FAQ 2026: 50+ Questions Answered
Comprehensive FAQ about Rakuten Mobile SAIKYO Plan for foreigners and international students in Japan. Get detailed answers on eligibility requirements, required documents (residence card, bank account), English customer support, eSIM vs physical SIM activation, billing methods, cancellation policies, coverage verification, MNP (mobile number portability) transfers, and comparing with Docomo, au, and SoftBank. Updated September 2026.
All questions
Do I need to be a Japanese resident to get a mobile plan?
Most carriers require you to be a resident of Japan with a valid residence card (zairyu card) and Japanese address. However, Rakuten Mobile is comparatively flexible for medium/long‑term visa holders. You'll typically need a Japanese bank account or credit card for payment. Unsure which plan tier fits your expected data usage? Review the options on /plans for data-breakpoints and pricing, then verify local service quality with /coverage before applying.
Is English customer support available?
Rakuten Mobile offers English customer support through chat and phone (availability hours can vary). Other major carriers (DoCoMo, SoftBank, au) provide limited English support via specialized channels. If English support is a priority, confirm Rakuten's service quality for where you live and commute using /coverage, then choose a plan that matches your data usage on /plans.
What documents do I need to sign up for a mobile plan?
You'll usually need: (1) Residence card (zairyu) + passport, (2) Proof of Japanese address, (3) Japanese bank account or credit card, (4) Sometimes a personal seal (hanko). Rakuten Mobile online applications rely on eKYC so make sure the address matches exactly. After gathering documents, review the options on /plans to select a data tier, then check /coverage to ensure strong reception in your area before submitting your application.
Can I cancel my contract if I leave Japan?
Yes. Rakuten Mobile has no fixed‑term contract. Note that as of April 2025, a ¥1,078 early cancellation fee applies if you cancel within the first year—this targets inactive or minimally-used lines, so active users are unlikely to be affected. Legacy carrier 2‑year style plans may still charge higher penalties. If you might leave Japan sooner than a year, the flexibility of Rakuten's scalable data tiers (which you can see on /plans) is still a major benefit. Before committing, we recommend verifying that your most frequented prefectures have adequate service on /coverage.
What's the difference between Rakuten's own network and partner network?
Rakuten's own network (urban cores) provides higher sustained speeds & effectively unlimited data within fair use. The domestic partner (au) roaming network covers rural gaps where Rakuten's own infrastructure hasn't yet reached. Use /coverage to see which prefectures and cities fall under each network type. If you primarily reside in a partner area, check current plan terms on the official Rakuten Mobile site for the latest data conditions.
Can I use international roaming with Japanese mobile plans?
Yes. Most carriers offer roaming add‑ons; Rakuten Mobile includes competitive roaming (2GB free in 106 countries) and free calls back to Japan from overseas via Rakuten Link. Note: outbound international calls from Japan to overseas numbers require a paid add-on (¥980/month). If you travel often, factor projected abroad usage into your domestic data selection on /plans and ensure strong home base connectivity via /coverage so throttling at home does not compound travel needs.
What payment methods are accepted?
Most carriers accept Japanese credit cards and bank transfers. Some international cards work but success varies. Rakuten Mobile is comparatively flexible. When budgeting, map your expected monthly data tier cost from /plans and confirm you will actually benefit from higher tiers by checking your daily locations on /coverage first.
How long does it take to get service activated?
eSIM: often active within hours after approval. Physical SIM: 1–3 business days shipping. Identity (eKYC) review may add 1–2 days. To avoid delays, verify your service quality on /coverage so you can select the optimal tier from /plans immediately and avoid a post‑activation plan change.
Are there student discounts available?
Some carriers run student promos but many target domestic students only. Rakuten Mobile's tiered pricing, which you can review on /plans, already starts low (from ¥1,078) so dedicated student discounts are less critical. We recommend confirming campus and dorm reception with /coverage before locking in any data assumptions.
Can I keep my phone number if I switch carriers?
Yes. Japan supports Mobile Number Portability (MNP). Obtain an MNP reservation number from your current carrier; activation after submission typically finalizes within 1–2 business days. Before porting, check /coverage to ensure Rakuten's network is strong in your daily zones and align your new plan from /plans with your historic monthly usage.
What happens if I don't pay my bill on time?
Late payment risk timeline: reminder → temporary restriction (~10–15 days) → suspension → potential termination & collections after 2–3 months. This can impact future applications. If budgeting is tight, choose a conservative data tier from /plans initially and scale up only if real usage warrants it. Our /coverage map can help confirm you will fully utilize higher‑speed areas.
Do I need a Japanese guarantor for mobile service?
Most carriers no longer require guarantors; some may request deposits for short‑term visa holders. Rakuten Mobile typically doesn't require a guarantor. First, validate the network quality in your prefecture with /coverage, then select the smallest feasible tier on /plans and upgrade later if your data usage consistently approaches the upper threshold.