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Testing Sign-Up Flows With Captcha and SMS OTP
How to test a sign-up flow with a captcha and SMS code: test keys and fake numbers in staging, plus real end-to-end checks with a solver and number.
Oct 19, 2026
How to Test SMS OTP Verification Without a Real Phone Number (Developer Guide)
Learn how to test SMS OTP flows end-to-end without a SIM card. Covers virtual number APIs, mocking, Twilio test creds, and a working Python test example.
Jun 6, 2026