▶ SMS Otp: OTP using text message, or SMS Otp is the most popular way of authentication because of low cost and fast deployment for: game, app,..

- Content SMS Otp in Enlish, Vietnamese.

- Can send OTP code via SMS using Brandname VT DI DONG or use brandname (registered by company name, product, ..)

- We provide: SMS OTP Documentation, English API

▶ FAQ about SMS Otp

❓ How long does it take for the OTP code to be sent to the client?

👉 The time from when you send the OTP code to the time the customer receives it is <10 seconds.

❓ Is registration required when using the VTDD brandname?

👉 You do not need to go through the brandname registration procedures when using VTDD. You only have to register your brandname with your carrier when you want to send SMS with your own brandname.

❓ What forms of OTP can be sent from VTX?

👉 VTX currently only supports the form of sending OTP via SMS, we provide brandname: VTDD/VT Di Dong available so you can send OTP without having to register with your carrier.

❓ There is a registration fee and maintenance fee when using the VTDD brand name?

👉 VTX does not charge any other fees such as registration fee, brandname maintenance fee when you use VTDD.

👉 VTX only collect these fees when you register your own brandname