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Online Platform: Voice Call Instead of 2FA SMS

Voice call instead of 2FA SMS In some countries, each 2FA SMS costs several times as much. An online platform transmits the login code there via voice call, over…

Industry: Services · Use: SMS API · Updated on October 26, 2026
INDUSTRY

Services

PRODUCT

2FA via SMS and voice call

RESULT

Log in for less

01 · BACKGROUND

The Problem

The platform secures every login with a one-time code sent by SMS. In some countries, an SMS costs many times more than in other markets, and that's exactly where the user base grew the most. 2FA costs rose with every new user, without any improvement in security.

02 · SOLUTION

How SMS Solves the Problem

For countries with expensive SMS, the login code now arrives as a voice call. A computer voice reads out the code, and the user enters it as usual. In all other countries, SMS remains the method, controlled by a country list in the backend.

03 · RESULT

The Benefits

BENEFIT 01

Lower cost per login

In expensive markets, the call replaces the SMS. The cost per login drops, without the platform giving up the second layer of security.
BENEFIT 02

One interface

SMS and voice calls run through the same API. Developers only had to define which channel applies to which country.
BENEFIT 03

Secure and privacy-conscious

Codes can be deleted immediately after delivery. All servers are located in Europe.

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What SMS can do for your business

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