The game has changed: protect your business and customers with complex Voice & SMS phone verification

Due to the serious influx in digital crime, industries require more secure verification modes than username and password alone. The strongest protection for your business is complex phone verification

Enhance security of websites, mobile apps and SaaS products

Secure your services

Our complex phone verification solution safeguards apps and online services from malicious attack, fraud and data loss.

Protect your users

Even strong passwords are hackable. Complex phone verification via SMS & Voice call provides a second layer of control to eliminate unauthorised account access.

Better customer satisfaction

Show you care by ensuring the safety of the data shared by your customers with your app or online service.

How complex Voice & SMS phone verification works


Phone number validity check

When the user enters their phone number for the first time (i.e. during the registration process), Apifonica instantly checks international databases and defines if the number is valid, and what type it is: moble or landline.


Landline number verification

SMS can’t be delivered to a landline number, so Apifonica makes a call and reads out the verification passcode instead.


Mobile number verification

Apifonica delivers verification passcode via SMS. If not delivered or no input received from the user, Apifonica calls the number and reads out the passcode.


Passcode input

The user inputs the passcode to complete the transaction, which is then verified by the company’s system.

Why your business prefer complex phone verification from Apifonica

Most complete solution

Apifonica can verify both mobile and landline phone numbers using mix of SMS and Voice call for one-time passcode delivery.

Incredibly affordable

With multiple verification techniques like verification via SMS, pone call, missed call and caler ID, Apifonica’s pricing is as good as it gets.

HLR lookup

Every phone number is verified against international databases to ensure it’s validity and identify the type (mobile or landline).

SMS verification

One-time SMS passcodes are sent via mobile network as a second decentralised channel to ensure account access is secure.

Call verification

Passcode is delivered as a voice message via a phone call, reaching both mobile and landline numbers.

Missed call verification

With this cost-savvy verification technique the user receives a missed phone call from a random number. The 4 last digits of this number are used as a passcode.

Caller ID verification

Another cost-saver, where the user receives a random phone number to call. They complete verification by dialing this number from the number that needs to get verified.

Multiple carrier support

Connected directly to 120 voice & SMS providers around the world, Apifonica ensures failover delivery of verification calls and messages at the best rates.

These sectors are delighted with Apifonica’s complex phone verification

Fintech services

Forbes says: more than 25% of all malware attacks hit banks and other financial services organisations, more than any other industry, and there were huge year-on-year increases in the numbers of compromised credit cards (212%), in credential leaks (129%) and in malicious apps (102%).

E-commerce & E-service

Online retail sales in 2018 hit $3,000,000,000,000 (trillions). Just 15% of that amount was reached by offline retail sales (res: Internet Retailer). The future will see even more e-commerce and e-service companies go digital. And when they do, there will be an even greater need for the security that phone verification provides.

Why choose Apifonica?

Backend - done!

We provide a ready-to-use backend solution tailored to your exact needs so that you don’t need to build it yourself.


Direct connection to 120 carrier networks worldwide results in the highest quality routes at the lowest prices

Unrivalled support

Dedicated project team providing 360 degree responsiveness and 24/7 availability.

Full GDPR compliance

Apifonica have fully implemented the EU's General Data Protection Regulations

4 easy steps to success with Apifonica Two Factor Authentication

Step 1

Click button and make contact with us

Step 2

Discover what can we do for your 2FA verification project

Step 3

Run free tests to proof your system suitability

Step 4

Be prepared to take your business to new heights