Internet access is prevalent throughout Vietnam, and is very affordable. Free Wi-Fi can now often be found in hotels, bars, restaurants and café in the cities. 

You can use your cell phone in Vietnam, although you will need to contact your service provider prior to traveling to enable global roaming. You can also opt to purchase a local SIM card when you arrive. 

It usually takes 7-10 days for international post to reach its destination, with rates similar to those in Western countries.

Sim card in Vietnam (Mobilephone, Vinaphone, Viettel ): 70.000d ~$ 3.13  you will get 100,000d ~ $4.5 in account and valid for 15 days.

+ Make direct calls:

International code: 00
Domestic code: 0
Vietnamese code: 84

To Vietnam:

00 + 84 + [city / network code] + [phone number]

From Vietnam:

00 + [destination-country code] + [phone number]

Within city:

[phone number]

To other city:

0 + [city code] + [phone number]

To city phone:

0 + [Hanoi or Ho Chi Minh City’s code] + [phone number]
(dial phone number directly when you are in the same city)

To mobile phones:

0 + [network code] + [phone number]

From mobile phones:

0 + [city / network code] + [phone number]

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