Guides

Address, Name and Contract-Holder Changes

Keep the carrier record, identity document and payment method aligned after moving, changing your legal name, transferring a line or inheriting a contract.

Menus, labels and guide explanations are available in the selected language. Carrier names, plan names and other proper nouns may remain in their official form.
Last checked: 2026-08-29 (JST)Application methods and support options can change. Always check the latest official information before applying.
Do not leave an old address on the accountUndeliverable confirmation or suspension mail can cause restrictions or cancellation. DOCOMO expressly warns that an unreported address change can lead to suspension.

Five procedures often confused

FörfarandeMeaningTypical requirements
Address change (住所変更)Same holder movesUpdate carrier contract and separate billing/shipping address. Also update residence card and payment provider. SIM/device deliveries are often non-forwardable.
Surname/name change (改姓・改名)Same person's legal name changesProvide a document connecting old and new names. Update bank/card name too or debit can fail.
Transfer (譲渡 / 名義変更)A different living person becomes holderA new identity/credit review, not a spelling edit. Both parties, IDs, consent and a fee may be required; route varies by plan.
Succession (承継)Holder has diedA family member/heir submits death and relationship documents. Points, account and device balance differ from ordinary transfer.
User change (利用者変更)Holder stays; actual user changesHolder remains responsible for charges. Family/age discounts may need user proof.

Recommended order after moving

1. Complete the legally required residence-card address update. 2. Change the carrier contract address in its account/app. 3. Change billing and delivery addresses separately where shown. 4. Update bank/card and linked electricity, fiber, gas or insurance. 5. Save confirmation.

Rakuten distinguishes contract and billing addresses and says a convenience-store slip uses the new address for the current month if changed by the 7th. DOCOMO address change is free. Delivery already in progress may require support because a SIM/device usually cannot be redirected.

Latin spelling, middle names and aliases

Match the current identity document. Do not silently drop a middle name to match a card; ask the carrier. LINEMO directs middle-name and some name changes to support/post. Rakuten permits a registered alias only when an accepted ID shows both legal and alias names.

Keep authentication workingBefore changing holder or number, confirm account ID, password, network PIN, registered email and SMS access. A holder change can reset mail, payment, family-group or linked-account settings.
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