First, please confirm the dialing method is correct: North American long distance: 1 + phone / mobile number; other international long distance: 011 + country code + city area code + phone number or: 011 + country code + mobile phone number
If your dialing method is correct, but you hear the voice prompt "The number you dialed is not valid", it means that your long distance function is locked or the number of minutes has reached the credit limit. At this time, you need to check whether the account has due payment. After you use a credit card and paid the fee online, the long distance function will be automatically unlocked. In addition, you can also contact our customer service to unlock the long distance function or adjust the maximum duration of the call.
If your dialing method is correct, but you only hear busy tone or hear no sound, you can try to test this number using another phone or mobile phone. If the number is correct and you cannot get through, you can contact our technical support team.