mobile phone– tag –

A practical troubleshooting guide for foreign residents who cannot receive SMS verification codes in Japan. Check the registered number, SIM, message filters, carrier settings, roaming, and recovery options in the right order.

A practical guide for residents, students, and workers moving a Japanese eSIM to a replacement phone. Learn the safest order, carrier-dependent options, possible fees, common mistakes, and what to test before erasing the old device.

A practical MNP guide for foreign residents who want to change mobile carriers in Japan without losing their telephone number. Learn how One-Stop works, what to prepare, possible costs, activation steps, and common mistakes.

A practical guide for foreign residents, students, and workers in Japan who need to cancel or switch a phone contract. It explains when a cancellation fee may apply, what charges are often confused with penalties, and what to do before you pay.