Introduction - If you have any usage issues, please Google them yourself
1 realize the function verification code countdown
1. Verify the following code example uses is to obtain the phone number word verification code, if the text does not receive the verification code to, the use of voice playback verification code form, two forms of combination, basically to avoid not received individual mobile phone number, but the verification code success rate close to 100 , effectively avoid customer loss.
2 text messages and voice verification code SMS verification code just modify the file name to call interface, note that voice verification code is 4 or 6 digits.
3 more than just a simple example of the call, a return value of reference.
More than 4 of the first plus picture verification code, and then can get the mobile phone verification code, mainly in order to prevent some malicious software for mobile phone number to send it messages, resulting in waste, there are a lot of methods. Not this one, this method may not completely avoid malicious software acq