Currently Being ModeratedNov 3, 2013 1:37 AM (in response to BunEang)
what mobile company are you using?
if you use Smart then if your contact number in your Contacts is listed as either 0xx xxx xxx or +855xx xxx xxx either will use your name that you used to identify that person.
alternatively, the best solution is to ALWAYS use +855 xx xxx xxx as your format in yr Contacts. Even if you call a local number it treats it as a local call.