Flash Calls
Call more for less with pay-as-you-go pricing
SMS
Send more for less with pay-as-you-go pricing
Send more for less with pay-as-you-go pricing
Viber
Send more for less with pay-as-you-go pricing
Voice
Send more for less with pay-as-you-go pricing
Telegram
Send more for less with pay-as-you-go pricing
Pay-As-You-Go Pricing
Pay Per Verification Attempt
No Monthly Platform Charges
Why Flash Calls
Faster UX, Fewer Abandons
Verify users in just seconds through a call-based authentication method.
Android Auto-Read Support
Enable automatic code capture on Android for a frictionless user experience.
iOS/Web Manual Entry
Speed up onboarding with quick verification that minimizes drop-offs.
Programmatic and Global
Provide simple manual code entry on iOS and web for universal compatibility.
Flexible Payment Options
Pay via bank transfer (preferred for enterprise customers), PayPal for quick and secure online payments, or credit card—we accept Visa, Mastercard, and American Express.
Bank Transfer
Paypal
Credit Card
What You Get
How It Works
Send Request
Your app sends the user’s phone number to the Flash Calls API.
Place Call
Dexatel triggers a short, missed call to the user’s device.
Capture Digits
The user enters the last digits (or Android auto-detects them).
Verify Code
Your app checks the digits and confirms the verification.
Developer Resources
Voice Verify API
Messaging Fallback
Status Page
Got Questions? We’ve Got Answers
Do you charge monthly fees for flash calls?
No. Dexatel does not apply platform, seat, or subscription fees for flash calls. Pricing is entirely pay-as-you-go, so you are only billed for each verification attempt you send.
What happens if flash calls aren’t supported by a carrier?
If a mobile carrier does not support flash calls in a specific market, Dexatel automatically switches to your configured fallback channels such as SMS, WhatsApp, or Viber. The verification attempt continues, and each fallback is billed at its respective standard rate.
Is Android different from iOS?
Yes. On Android devices, Flash calls can be automatically read by the app, eliminating the need for manual input and creating a smooth user experience. On iOS and web, however, users must manually enter the digits from the missed call.
How do flash calls compare to SMS OTP in terms of cost?
Flash calls typically deliver significant savings compared to SMS OTP. Market data and customer benchmarks show that businesses can reduce their verification costs by as much as 60 percent, depending on the country, routing, and traffic volumes.
Can I use TTS voice OTP instead of a missed call?
Yes. If you prefer not to rely on missed calls, Dexatel also supports text-to-speech Voice OTPs. Each attempt triggers an automated voice call that delivers the one-time code, and pricing follows a per-attempt model.
Do I need to rent a number?
No. Renting a number is not required to use Flash Calls, as the calls are triggered automatically by Dexatel’s system. However, if you need specific caller-ID behavior, branding options, or inbound call flows, our sales team can provide guidance and custom solutions.
Start Using Flash Calls With Dexatel
Sign up for Dexatel today and get started with flash call verification for less.
