SMS verification with real US numbers
Why banking apps and platforms block VoIP—and how real carrier numbers pass every check.
Google, PayPal, and hundreds of fintech and social platforms rely on carrier signals to detect virtual or disposable numbers. Real US SIMs from AT&T, T-Mobile, and Verizon pass these checks.
This post explains how SMS verification works at the carrier level, what triggers blocks, and how renting real devices removes friction for signups, 2FA, and account recovery.