Mercari Japan Phone Verification

Quick answer: Mercari Japan uses mobile phone verification primarily through SMS. Depending on the verification flow, Mercari may also offer automated voice authentication if an SMS code cannot be received.

This product provides one-time phone verification support for a supported Mercari verification request. The service is intended for a single verification event and does not provide ongoing access to the phone number after completion.

Important before ordering: Mercari's current rules state that users should use their own phone number when registering an account and prohibit new registration using a third party's phone number. Mercari controls whether any phone number or account is accepted. Please review Mercari's current requirements before ordering.

• Verification type: SMS verification, with automated voice authentication available in some Mercari flows.
• One verification request per order: each order covers one supported verification event.
• One-time service: the supplied number is not intended for future Mercari verification requests.
• Platform-controlled: final acceptance and account access are determined by Mercari.

Browse other supported platforms: Japan phone verification services.

For an overview of SMS, voice and caller-ID verification in Japan, see our Japan Phone Verification Guide.

Mercari Phone Verification Requirements

Mercari requires a supported mobile phone number for its standard phone-verification process.

• SMS capability: the number must be capable of receiving Mercari's authentication SMS.
• Voice capability: Mercari may offer automated voice authentication when an SMS code cannot be received.
• Fixed-line numbers: not accepted for the standard phone-verification process.
• 050 numbers: not accepted.
• Data-only numbers: not accepted.
• Previously registered numbers: Mercari may reject a number that is already associated with an existing account.

A phone number that works with another Japanese platform is not automatically suitable for Mercari because each platform applies its own verification rules.

How Mercari SMS Verification Works

1. Mercari asks for a supported mobile phone number.
2. Mercari sends an authentication code by SMS.
3. Enter the code on Mercari before it expires.
4. If the SMS cannot be received, Mercari may offer an automated voice-authentication option.

For new account registration, Mercari currently uses a four-digit SMS authentication code. Other phone-verification flows may use a six-digit code. Mercari states that authentication codes are valid for 10 minutes.

Mercari May Ask for Phone Verification Again

Phone verification is not necessarily a one-time requirement on Mercari. The platform may request authentication again during activities such as:

• logging back into an account;
• the first purchase after logging in from a new device or browser;
• certain payment or Merpay-related actions;
• other account-security checks.

This is important for this product: our service covers the supported verification event included with your order. It does not provide permanent access to the phone number for future Mercari authentication requests.

Service Scope

This product provides one-time Mercari phone verification support.

• The service covers one supported verification request.
• The number is not provided as a permanent personal phone number.
• Future SMS or voice authentication requests are not included.
• Mercari identity verification (本人確認) is not included.
• Passkey authentication and account recovery are not included.
• The service does not bypass Mercari account restrictions or security checks.
• Successful phone verification does not guarantee continued account access or approval of other Mercari features.

Mercari's own rules and security systems always take precedence over this service.

How Our Service Works

1. Place your order — purchase the Mercari phone-verification service.
2. Follow the instructions — we provide the information required for the supported verification request.
3. Complete verification — complete the SMS or supported verification step presented by Mercari.
4. Service completion — once the supported verification request has been completed, the one-time service ends.

Phone Verification vs Mercari Identity Verification

Mercari phone verification and identity verification are separate processes.

Phone verification confirms access to a registered mobile phone number using SMS or automated voice authentication.

Identity verification (本人確認) may require separate personal-information or identity-document checks depending on the Mercari or Merpay feature being used.

This product covers phone verification only. It does not provide or replace Mercari identity verification.

Return & Refund Policy

• This service is delivered digitally and covers one supported verification request.
• A full refund is provided if the initial supported verification attempt fails because of a technical issue directly attributable to our service.
• Additional verification requested later by Mercari is outside the scope of the original order.
• Platform-side rejection, account restrictions, identity-verification requirements and other Mercari security checks are outside our control.
• By purchasing this service, you acknowledge the service scope and limitations described above.

Mercari Japan Phone Verification FAQ

Does Mercari use SMS verification?

Yes. SMS is the main phone-verification method used by Mercari. In some situations, Mercari may also offer automated voice authentication if an SMS code cannot be received.

How many digits is the Mercari verification code?

Mercari currently uses a four-digit SMS code for new account registration. Other phone-verification flows may use a six-digit authentication code.

How long is a Mercari verification code valid?

Mercari states that phone-verification codes are valid for 10 minutes.

Can I use a 050 number for Mercari?

No. Mercari's current guidance states that phone numbers beginning with 050 cannot be used for its standard phone-verification process.

Can I use a landline for Mercari verification?

No. Mercari requires a supported mobile phone number capable of receiving SMS or voice calls for phone verification.

Can I use a temporary or third-party phone number to create a Mercari account?

Mercari's current rules state that users should register using their own phone number and prohibit new account registration using a third party's phone number. Always follow Mercari's current account-registration requirements.

Can a phone number already registered with Mercari be used again?

Mercari may reject a number that is already associated with an existing account. Mercari also operates a one-person-one-account policy.

Will Mercari ask for phone verification again later?

It may. Mercari can request phone verification again for re-login, a first purchase from a new device or browser, certain payment actions, or other security checks.

Does this service include Mercari identity verification?

No. Phone verification and identity verification are separate processes. This service covers phone verification only.

Official Mercari Sources

• Mercari — Phone-number verification procedure
• Mercari — When phone verification is required
• Mercari — Phone verification troubleshooting
• Mercari — Account registration and phone-number rules

Last checked: 23 September 2026. Mercari may change its verification and account-security requirements at any time.