We place a drop-call to the user’s number — the code is the last digits of the incoming number. No need to answer, and cheaper than SMS.
Flash call verifies a number with a drop-call. We place a short call to the user’s number that is dropped automatically; the code is the last digits of the incoming number. The user does not answer the call, and you avoid paying for expensive SMS.
With flash call we place the call and the code is the last digits of the incoming number. With reverse flash call the user calls our number and we confirm by Caller ID — cheaper and with no code entry.
No, the call is dropped automatically — the user just enters the last digits of the incoming number.
From 0.80 ₽ per successful verification, with no subscription or packages.
Usually the last 4 digits of the incoming number; the length can be adjusted for your scenario.
Failed attempts are not charged. You can offer the user another available method — all methods run through one API.