Frequently Asked Questions

A temporary phone number (also known as a disposable number or burner number) is a virtual or cloud-hosted phone number that receives inbound SMS text messages online without requiring a physical SIM card or contract.

Yes, our public temporary numbers are 100% free to use. There is no subscription, registration, or credit card required. The service is supported by sponsor advertisements.

No. TempNumber is 100% web-based and works smoothly across all modern desktop, tablet, and mobile web browsers without any downloads.

Most verification codes appear within 5 to 30 seconds of being sent by the third-party service. Our public inboxes auto-refresh every 8 seconds to fetch new messages automatically.

Common reasons include: (1) The service (e.g., WhatsApp, Telegram, Google) has rate-limited or blacklisted the specific number due to high public usage; (2) The SMS sender is experiencing delivery delays; (3) The number is temporarily overloaded. We recommend trying an alternative number or a different country.

Messages in our public inboxes are retained for a rolling window of 24–48 hours before being automatically wiped to protect user privacy and keep inboxes clean.

Yes. All free numbers on TempNumber are public inboxes. Anyone viewing that specific number page can read all incoming messages. Never use these numbers for sensitive, personal, financial, or confidential accounts.

Many users successfully receive activation codes for social apps and web tools. However, because these numbers are public, subsequent users may access the inbox. Do not use public numbers for personal accounts you intend to keep long-term.

No. Our numbers are strictly configured for receiving inbound SMS text messages only. Outbound SMS and voice calling are not supported on public tiers.