Overview
SMS is reliable, but WhatsApp is engaging. With over 2 billion active users, WhatsApp has become the de-facto communication channel for the modern world. D-Caller's WhatsApp Device Verification service allows you to authenticate users on the platform they love and trust most.
Moving your 2FA and verification flows to WhatsApp offers distinct advantages. It eliminates the issue of 'OTP fatigue' associated with SMS spam. Messages come from a Verified Business Profile (often with a Green Tick), instantly establishing trust and authenticity. The rich UI allows for clearer branding, better readability, and interactive buttons (e.g., 'Copy Code') that improve the user experience.
Our solution leverages the official WhatsApp Business API to ensure 100% compliance and stability. Unlike gray-route solutions that risk number banning, D-Caller ensures your business presence remains secure and professional. We handle the complex session management and encryption, giving you a simple API to send verification messages.
Beyond security, this opens a door to deeper engagement. Once a user verifies via WhatsApp, you have an open 24-hour session window to send welcome messages or support information, turning a security step into an onboarding opportunity.
Key Features
Verified Business Profile
Send messages from a branded profile with your logo and business info, not a random shortcode, increasing user trust.
One-Tap Copy
Utilize WhatsApp's 'Copy Code' button feature to make entering the OTP seamless for the user.
End-to-End Encryption
Benefit from WhatsApp's industry-leading encryption, ensuring that OTPs are secure from interception.
Global Reach
Reach users internationally without the complex pricing and delivery issues often faced with international SMS.
Rich Media & Formatting
Use bold text, emojis, and clear formatting to make your verification messages look professional and friendly.
Why Choose This Service?
Higher Delivery Rates
WhatsApp messages are delivered over data, bypassing cellular congestion issues that affect SMS.
Enhanced Trust
The 'Verified Business' badge assures users they are interacting with the legitimate entity.
Interactive Experience
Users can reply to the bot for help if they are having trouble login in, reducing support tickets.
Modern Brand Image
Position your brand as tech-forward and user-centric by using the most popular messaging app.
Technical Specifications
Transparent Pricing
Official WhatsApp Business API rates
What's Included
Frequently Asked Questions
Do I need a verified Facebook Business Manager?
Yes, to use the official WhatsApp API, your business must be verified by Meta. We assist you with this documentation.
Is it more expensive than SMS?
It can be slightly higher per message than domestic SMS, but the higher conversion rates and brand value often yield a better ROI.
Can I send marketing messages too?
Yes, provided the user has opted-in. WhatsApp has strict quality guidelines for marketing templates.
What if the user doesn't have WhatsApp?
We recommend a fallback logic: try WhatsApp first, and if not delivered within X seconds, automatically failover to SMS.
"Upgrade your user experience. Switch to WhatsApp Verification with D-Caller and offer the modern security flow your users expect."
Speak to an ExpertCommon Use Cases
App Login / Sign-up
Replace or supplement SMS OTPs with WhatsApp for a smoother entry into your application.
Account Recovery
A secure and trusted channel for users to reset forgotten passwords.
High-Value Approvals
Managers can approve large transactions or system changes simply by tapping a button on WhatsApp.
Customer Support Entry
Verify a user's identity before starting a sensitive support chat session.
Enterprise Ready
ISO 27001 Certified & GDPR Compliant Infrastructure.