Verification of Mobile Number is done very quickly and securely using the missed call system. .
If you need to integrate this kind of mobile number verification to your app .
You can register . www.cognalys.com ( NO CREDIT CARD REQUIRED )
Maximum no of verification can be done for a mobile number = 2
Maximum no of verification can be done from a device = 10
Maximum Validity of the APP will be 20 days .