Basic Calling Information
- Mobile phone numbers in Vietnam contain eight digits. The first digit is always "9" or "1", and the first two or three digits signify the cellular network to which the number belongs.
- When calling a mobile phone from within Vietnam, always dial the Domestic Access Code "0" before the eight-digit number. Do not dial this access code when calling from another country.
- When making an international call to a mobile phone in Vietnam dial: Vietnam's country code [84] + nine- to ten-digit mobile phone number.
Calling Examples
| Fixed line to Mobile Phone |
Mobile Phone to Fixed Line |
Mobile Phone to
Mobile Phone |
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Local Calls
Dial the DAC for Vietnam + mobile phone number
Example
A call from a fixed line in Hanoi to a mobile phone in Hanoi:
0 + nine- to ten-digit mobile phone number
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Local Calls
Dial the local number
Example
A call from a mobile phone in Hanoi to a fixed line in Hanoi:
Dial the six- to seven- digit number
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Local Calls
Dial the DAC for Vietnam + mobile phone number
Example
A call from a mobile phone in Hanoi to a mobile phone in Hanoi:
0 + nine- to ten-digit mobile phone number
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Long Distance
Dial the DAC for Vietnam + mobile phone number
Example
A call from a fixed line in Hanoi to a mobile phone in Ho Chi Minh City:
0 + nine- to ten-digit mobile phone number
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Long Distance
Dial the DAC + area code + local number
Example
A call from a mobile phone in Hanoi to a fixed line in Ho Chi Minh City:
0 + (8) + seven-digit local number
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Long Distance
Dial the DAC for Vietnam + mobile phone number
Example
A call from a mobile phone in Hanoi to a mobile phone in Ho Chi Minh City:
0 + nine- to ten-digit mobile phone number
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International Calls
Dial Vietnam's IAC + country code of country being dialed + area code or mobile phone prefix + mobile phone number*
Example
A call from a fixed line in Hanoi to a mobile phone in San Francisco, US:
00 + [1] + (415) + seven-digit mobile phone number*
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International Calls
Dial Vietnam's IAC + country code of country being dialed + area code + local number*
Example
A call from a mobile phone in Hanoi to a fixed line in San Francisco, US:
00 + [1] + (415) + seven-digit local number*
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International Calls
Dial Vietnam's IAC + country code of country being dialed + area code or mobile phone prefix + mobile phone number*
Example
A call from a mobile phone in Hanoi to a cell phone in San Francisco, US:
00 + [1] + (415) + seven-digit mobile phone number*
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*Calling a mobile phone number or fixed line in some countries from outside those countries may require a different procedure from the one shown here. Refer to the Cell Phone Dialing Guide or Dialing Guide for the country you are calling.
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