Therefore , to call a mobile number in Cambodia from other countries , dialing begins with + 855 1 , + 855 8 , or + 855 9 etc .
Calls made from outside Cambodia must omit the prefix 0 .
To call a mobile number in Cambodia from other countries , dialing begins with + 855 1 , + 855 8 , or + 855 9 etc .
Calls made from outside Cambodia must omit the prefix 0 .