 How to call:
009 - Exit code when making an international call from Nigeria
84 - Vietnamese country code for inbound calls
4 - Hanoi city code
009 + 84 + 4 + Local Number - International dialing code format
 World Times:
The time in Nigeria is now 14:09:38 PM (02:09:38 PM)
The time in Hanoi Vietnam is now 20:09:38 PM (08:09:38 PM)
 Mobile codes:
To call a mobile phone in Vietnam from Nigeria use the following dialing code format: 009 + 84 + 9# + The Number
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