What the official guidance establishes
Steam’s mobile-authenticator FAQ says new VoIP numbers are not accepted. Some numbers cannot receive the required text messages. These are published limitations, not predictions from Jorunavel.
What we cannot establish
We do not query Steam, classify your line or test a carrier. A mobile-labelled number is not a promise of acceptance, successful delivery or account recovery. Other requirements and account circumstances can apply.
Use the supported process
If a rejection seems incorrect, use Steam’s support options. Follow its current instructions for changing account security settings. Never share passwords, authenticator recovery material or text-message codes with a number-comparison site.
Keep the source current
This note was reviewed on 29 October 2026. Read the linked FAQ again before making an account decision. Platform policies can change independently of this educational guide.