WhatsApp OTP Example
Request WhatsApp OTP from Flutter
A Flutter client example that calls your backend securely.
Setup
- Add the http package to your Flutter app.
- Create a backend endpoint that sends the DNZ request.
Code
Future<void> requestOtp(String phone) async {
final response = await http.post(
Uri.parse('https://api.example.com/request-otp'),
headers: {'Content-Type': 'application/json'},
body: jsonEncode({'phone': phone}),
);
if (response.statusCode >= 400) {
throw Exception('Unable to request OTP');
}
}Production notes
- Do not ship the DNZ API key inside the mobile app.
- Use HTTPS and server-side abuse limits.