Lost phone · Japan
Lost or stolen phone in Japan: the numbers that still work.
In Japan, police answer on 110, and there's a separate tourist-assistance line (+81-3-3501-0110) staffed for visitors - both are on this page.Your phone is gone and you're holding a borrowed one, so everything here dials from any handset - no apps, no account, every number a tap-to-call link. Work top to bottom.
Last verified: 2026-07-21 · compiled from official sources listed below
Emergency numbers
Reporting it to the police
For a theft in progress or a nearby suspect, call 110. Otherwise report in person at the nearest koban (police box) or police station and file a lost-property report (ishitsubutsu todoke); you receive an acknowledgement you can use for insurance. Japan Visitor Hotline (JNTO) 050-3816-2787 (24h, English/Chinese/Korean) can help translate and direct you.
- Tourist assistance line: +81-3-3501-0110
Blocking your SIM
These are Japan's carriers - use them if your number is local. If your SIM is from your home country, call your own carrier's lost-phone line instead; nobody here can block a foreign SIM.
| Carrier | Lost-phone line | Official page |
|---|---|---|
| NTT Docomo | domestic lines only - see notes | Block online ↗ |
| To suspend service: 15712 from a docomo handset (toll-free, Japanese, 24h) or 0120-524-360 from a landline (Japanese, 24h). No dedicated English overseas suspension line published; if lost while abroad, call the numbers above ASAP. Both work only within Japan. | ||
| au (KDDI) | +81-3-6670-6944 works from abroad | Block online ↗ |
| +81-3-6670-6944 is the overseas inquiry line (24h; free from an au/UQ/povo1.0 device). Domestic English loss/theft line 0120-959-472 (09:00-20:00, toll-free) works only within Japan. | ||
| SoftBank | +81-92-687-0025 works from abroad | Block online ↗ |
| Overseas lost/stolen line +81-92-687-0025, 24/7 (toll-free only from SoftBank handsets); otherwise standard international charges apply. | ||
Your embassy
If your passport went with the phone, your embassy or consulate issues the emergency travel document - the local police can't. The official directory of foreign missions in Japan is here: find your embassy ↗. Bring the police report from the step above.
Getting back online
Tourist prepaid SIMs and eSIMs (e.g. Sakura Mobile, Mobal, airport counters) are widely available; data-only SIMs usually need only a passport, while voice SIMs can require Japanese ID or a longer contract. A replacement eSIM from your home carrier or a new travel eSIM is often the fastest way back online.
Sources
- https://www.docomo.ne.jp/english/support/procedure/change_release/discontinuance/
- https://www.au.com/english/mobile/service/global/inquiry/
- https://www.au.com/english/support/faq/eloss-theft/
- https://www.softbank.jp/en/mobile/support/lost/
- https://www.mofa.go.jp/about/emb_cons/protocol/index.html
- https://www.japan.travel/en/plan/emergencies/
Next time, don't go hunting for this page.
These numbers plus your own - your person, your bank's freeze line, your insurer - on one encrypted page you can open from any borrowed browser with just your name and a PIN.
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