The official starting point
Valve’s Steam Guard Mobile Authenticator FAQ explains its phone-number requirements and rejection cases. As checked on 29 October 2026, it states that new VoIP numbers are not accepted for these requirements. A service advertised as virtual should therefore not be assumed suitable.
Keep the question specific
Read the part of the official documentation that applies to your intended action. Adding an authenticator, changing devices and recovering access can involve different circumstances. Girexuno does not provide Steam accounts or complete any security step.
Plan for continued control
If you use a phone number in an account-security arrangement, consider how you will retain access and what the official recovery process requires. Do not put recovery codes or account identifiers into the comparison tool or enquiry form.
Go to Steam for account help
If a number is rejected or you cannot access your account, use Steam Support’s instructions. No worksheet result is a workaround or approval. We have no affiliation with Valve and cannot alter its decisions.
Primary source
Steam Guard Mobile Authenticator FAQ · checked 29 October 2026. Requirements can change; consult the live source.