International phone charges are steep in Vietnam and many hotels, especially upmarket ones, add extra fees, Check the rates before dialing. One long-distance service offers a flat fee of around US$0.75 per minute to 50 countries; dial 171 followed by the country code and number.

Public phones require phone cards, which are available at post offices. To rent a mobile phone call 821 8465 in Hanoi and 824 2382 in HCM City. Faxes can be sent from hotels, business centers or post offices. Again, rates vary. Hanoi and HCM City offer dozens of Internet cafes.