Firebase SMS Verification Number

Test Firebase phone authentication against real SMS-capable numbers in multiple countries. Rent per test run, watch OTPs arrive in your dashboard, and reclaim the cost of any number that receives no message.

Testing Firebase phone authentication needs real numbers at some point. Emulators and fictional test numbers only carry a project so far; before shipping, most teams want proof that the production SMS flow delivers actual codes to actual devices in the countries they serve. The same applies to any app built on Firebase's identity stack, and that is precisely what rented virtual numbers are for.

Each number you rent here behaves like a genuine subscriber line: Firebase sends its OTP, the message arrives, and the code appears in your dashboard for you to feed back into the auth flow. No SDK changes are needed on your side. Renting numbers in each country you serve lets you confirm sign-in works for international users without shipping phones around.

The live list above shows what matters for test planning: per-country pricing, current stock and a speed marker that hints how quickly codes tend to land. Wallet balance covers each rental, and short activation windows keep iteration cheap.

When an SMS does not arrive within the window, cancelling returns the full amount to your balance, so a failed test run does not burn budget. QA engineers, indie developers and agencies use the same flow for staging checks, regression passes and release-day smoke tests of authentication.