OnlineSIM.ru

Prepaid credits carry variable costs

The homepage offers a free trial, while the Terms describe paid use as client prepayment credited to an account. The trial and account-credit mechanism are separate statements; the sources do not specify a trial amount or duration.

The Terms say costs may change at any time without notice, and clients are responsible for applicable taxes, duties, levies, and third-party payment processing fees. That makes the eventual cost sensitive both to the service price at purchase and to charges outside the number transaction.

A further cost boundary applies if an account is automatically deleted: remaining balances and prepaid amounts are forfeited and non-refundable, according to the Terms. Buyers should therefore distinguish unused account credit from a refund request tied to a particular network outcome.

One-time activations and rentals differ

OnlineSim offers short-term and long-term phone rental.

The API documentation describes renting a number to receive messages from multiple senders. For single-service activations, it says SMS can be received from one service within a short window, which is 15 minutes for most services. The same operation does not allow a service change while it is active, according to the API documentation.

The provider says its platform does not support messages from payment services, banks, or other financial institutions. It also states that messages received on free numbers are accessible to other site users, rather than private.

Support can clarify purchase boundaries

Before registering, ask support whether the intended use is lawful in the relevant jurisdiction; the Terms assign that determination to the client. OnlineSim also says it may request client identification and suspend, terminate, or block account access if requested information is not supplied.

For API use, clarify whether the account meets the provider’s registration requirement and what request limits apply. The API documentation says access is limited to registered users with an OnlineSim profile, and requests may be limited by frequency or concurrency.

For a refund question, the provider requires a written request to its support address. Before purchase, ask how that route applies to the specific order, since the Terms exclude refunds for network outcomes. OnlineSim states that customer support is available through online chat, but buyers should ask which channel handles their issue.

API operations return messages by method

The API provides access to OnlineSim services for receiving SMS on virtual numbers, according to the provider’s documentation. Its documentation lists API-key authentication among the available authentication methods, rather than presenting it as the only route.

For an active operation, the API can forward messages to a URI configured by the user. This gives buyers a documented way to route incoming messages beyond the service interface, while leaving the receiving endpoint under their control.

Responses are returned in JSON or TXT, depending on the method and results, the API documentation states. The provider’s Terms also describe API access as subject to applicable API requirements and limits.

Documented options have defined uses

OnlineSim’s About page and API documentation describe the following options and mechanisms.

• Short-term and long-term phone rental are listed alongside virtual-number SMS.
• The API can forward messages from active operations to a user-configured URI.
• API responses use JSON or TXT, depending on the method and results.
• The API documentation describes receiving messages from multiple senders on a rented number.

Network outcomes and inactivity carry costs

OnlineSim’s refund terms leave delivery and acceptance risk with the buyer: the provider excludes refunds for non-delivery, delay, blocking, rejection, and number non-acceptance. Third-party payment, currency-conversion, and bank fees are also non-refundable under its refund policy.

The provider’s Terms say automatic account deletion forfeits remaining balances and prepaid amounts, while its refund policy also excludes balances after automatic deletion under the Terms or Data Retention Limitation Policy. This makes account retention a separate financial condition from whether a particular activation worked.

Free numbers have limited quantity and country availability, and messages received on them are accessible to other site users. API requests may also be limited by request frequency or concurrent-request count, the API documentation states. The provider says it does not guarantee* uninterrupted or error-free Platform operation.

Several details are missing; they are listed under What we could not confirm.

Compare number services by purchase terms

When comparing number services, check whether availability is shown for the specific registration service and whether billing is one-time or rental-based. Also compare how refunds treat undelivered codes, what API limits apply, which payment routes are supported, and what uses the provider permits.

Private registration has a narrow boundary

OnlineSim describes its service as receiving messages on virtual numbers for private registration on websites, online services, and apps. The provider also says the service is intended for testing, work, and data protection. These statements make the documented use relevant to buyers assessing virtual-number SMS or API access, not a promise about every registration workflow.

OnlineSim says purchased numbers are not reused and only the client can see their codes. That privacy statement does not apply to free numbers, whose messages are accessible to other site users. The Terms put responsibility for determining whether use is lawful on the client.

Refund review and number limits in brief

How does OnlineSim assess refund requests?

OnlineSim says refunds are not automatic and are reviewed case by case. If approved, the amount is based on the account balance at review, excluding non-refundable components and subject to lawful set-off, according to the Refund Policy. The provider excludes network outcomes from refunds under its Terms.

What must a refund request include, and how long is review?

The Refund Policy requires the account identifier, the reason, and payment details sufficient to identify the transaction. OnlineSim says it reviews sufficiently detailed requests within 5 business days of receipt. The provider may refuse or delay processing if requested information is not supplied.

What happens after a refund is approved?

OnlineSim says approved refunds go to the original payment method unless that is technically impossible or restricted by payment-provider rules. The Refund Policy says processing typically takes 3–5 business days after approval, while crediting times may vary by bank and payment provider.

Can troubleshooting come before a refund decision?

For a reported inability to use Marketplace Services, OnlineSim says it may first offer troubleshooting steps or alternatives where available. The provider also says it may refuse refund requests when it reasonably suspects fraud, abuse, unlawful use, AML risk, or a breach of the Terms.

What happens to balances and records after account inactivity?

The Terms say Account Information is retained for 30 days from the last purchase activity; without a new purchase, the Account and information are permanently deleted. Service Usage Records are retained for 30 days from creation, subject to longer retention required or permitted by law, according to the Terms.

Which refund-policy language has legal effect?

OnlineSim’s Refund Policy states that only its English version has legal effect. The provider also says clients may terminate by ceasing Platform use, but termination does not create a right to a refund.

Register only after the money path is clear

Fits if… the buyer accepts account-credit prepayment and understands that network delivery or acceptance outcomes are excluded from refunds.

Probably not if… the intended registration depends on messages from a bank, payment service, or other financial institution; OnlineSim says those messages are unsupported.

Main risk… account deletion can remove unused prepaid value, so review the retention terms and refund rules before adding credit.

Sources

The facts above were taken from the public pages listed here, and each entry shows the date it was read.

• onlinesim.io/documentation/offerchecked 2026-10-31
• onlinesim.io/documentation/refundchecked 2026-10-31
• onlinesim.iochecked 2026-10-31
• onlinesim.io/aboutchecked 2026-10-31
• onlinesim.io/openapi_docs/Onlinesim-API-UN/infochecked 2026-10-31
• onlinesim.io/company_detailschecked 2026-10-31

How we put this page together

Editorial team of Stack Shelf. Prepared by the editorial team of Stack Shelf from the public sources listed above; the facts were checked on 2026-10-31. Nobody tried the service in practice. We revise the text whenever those sources are updated.

Last updated: 2026-10-31

Right of reply

If you represent OnlineSIM.ru and think this entry is inaccurate or out of date, write to us and attach evidence. After the refutation is documented, the entry is corrected or removed. Entries are not removed or toned down in exchange for money.

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