Testing SMS Without a SIM Card

Testing SMS verification without a physical SIM saves time in staging and CI. Quick OTP gives you a real inbound route: trigger OTP send in your app, then read the message from the number's public inbox.

Tips for automated tests

• Rotate temporary numbers between parallel test runs to avoid inbox collisions.
• Poll the inbox page or your backend that reads the same API - web has no live push.
• Assert on codes[] parsing, not just raw message text.
• Document that shared inboxes are not secret - never test with real user credentials.

For load testing, expect rate limits on web. Use dedicated test environments and fake OTP endpoints where possible.