Authorization via phone number?

Question

API

Hello!
Please advise a high-quality service that provides api for implementation on the site of authorization through a mobile phone number. It is important to work with operators of all countries.

Answer 1

I want the same authorization system on the site as VK.com (by phone). Where to dig?
Detailed comparison of popular SMS/Voice services...

Answer 2

https://www.twilio.com

Answer 3

You need to screw any suitable operator yourself. In any case, no one will do authorization in the application for you, and sending SMS from the application is not a difficult task.

Answer 4

Hello! Recently, my VK page was blocked and a friend advised the site https://freepublicsms.com try if you suddenly need a phone number, this site helped me, but I heard that there are numbers that someone already uses, so I try to make money through Vk do not throw