MoneyInJapan

Smartphone and device insurance

Damage, malfunction, water, theft, loss, deductibles, and duplicate coverage.

Direct answers

Device insurance repairs or replaces a phone after accidental damage, malfunction, water damage, or theft depending on the plan; “loss” is only covered if expressly included, and manufacturer, carrier, card, or home cover may already overlap.

Public coverage first · 2026 edition

Benefits may vary by: insurer · employment status · municipality · household

Get professional or administrator help: Ask your carrier and card issuer what device protection you already have before adding a separate policy.

Review due: 2026-10-30

Key points

  • Many plans distinguish documented theft from unexplained loss.
  • Deductibles, device age, and replacement valuation limit the payout.
  • Carrier, card, and home policies may already cover theft or damage.
  • Cosmetic damage, batteries, and accessories are often excluded.

Check for overlap first

Before buying device insurance, check whether your carrier plan, credit-card purchase protection, or home-contents policy already covers accidental damage or theft, and confirm exactly what “loss” means in the plan.

Who this is for

  • Residents mapping protection before shopping for private insurance

What this is not

  • A quote, policy ranking, or individualized recommendation
Important cautions
  • Eligibility, contributions, waiting periods, exclusions, and benefit amounts can vary. Confirm your case with the administering insurer or authority before acting.

Sources