 How to call:
Exit Code ** - Exit code when making an international call from South Korea
84 - Vietnamese country code for inbound calls
4 - Hanoi city code
Exit Code ** + 84 + 4 + Local Number - International dialing code format
** Exit Code - South Korea has multiple telephone carriers: ()
 World Times:
The time in South Korea is now 18:23:51 PM (06:23:51 PM)
The time in Hanoi Vietnam is now 16:23:51 PM (04:23:51 PM)
 Mobile codes:
To call a mobile phone in Vietnam from South Korea use the following dialing code format: Exit Code ** + 84 + 9# + The Number
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