Commonly, this problem happens when either the wireless signal of mobile service from the caller or the receiver is not reliable. It also considers other issue such as: bad weather, during holidays may cause the disconnection or bad quality. If the problem still occurs, please report this matter to our tech team at: tech@vinatouch.com

The system only required the pin number when your phone is not register or the phone already registered with a block Caller ID. To solve this problem, please TURN OFF CALLER ID BLOCK or press " 82" or use Toll Free: 1-800-909-9890.