Call status says success but the recipient is not receiving the call

This situation could be one of the following reasons:

• The message has gone to voicemail but the recipient has not checked it yet.
• There is a call screening service in place (usually, with the carrier or phone device), as a privacy/security filter, that is taking the call ahead of time and asking for a response to a prompt before proceeding to transfer the call to the recipient. However, the Phonevite call does not have any interactive capability (e.g. "state your name", "press 1", etc). Therefore, while the call has connected successfully, the recipient is not able to receive the message as the call screening service is not letting call fully through.