+ Police 113
+ Fire Brigade 114
+ Hospital 115
+ Time 117
+ General Information 1080
Landline numbers in Hanoi and HCMC have a sequence of eight numbers, others have seven.
+ Vietnam international code: +84
+ Hanoi area code : (04)
+ Ho Chi Minh area code : (08)
Telephone bills are 30% to 40% cheaper if dialed with 171 or 178 services.
+ Domestic call : 171 (178) + 0 + Area code + Number.
+ International call : 171 (178) + 00 + Country code + Area code + Number
Since hotels and guesthouses often charge higher for telephone calls, try to find a post office or any reliable public service.
There are many mobile networks with different codes:
+ Vinaphone: 91, 94, 121, 123, 125 (GSM 900)
+ Mobifone: 90, 93, 122, 124, 126 (GSM 900/1800)
+ Viettel: 96, 98, 97, 165, 166, 167, 168, 169 (GSM 900)
+ SFone: 95 (CDMA)
+ Vietnamobile: 92 (CDMA)
You can buy a SIM card in every shop selling mobile phones, or showing their network's brands. The standard price from 100,000 dong onwards, but foreigners are often higher than native.
Prepaid account charges vary from 1,700-2,500 dong per minute. Recharge cards are available in denominations of 20,000, 50,000, 100,000, 200,000 and 500,000 dong.
Roaming onto Vietnam's GSM networks are possible with foreign mobile phones, subject to agreements between operators.
Tips for Calling Internationally from Vietnam
If you are calling internationally from Vietnam, first dial 00, followed by the country code for the country you are trying to reach. Use international phone cards for the best bargains when calling from Vietnam. Calling from local post offices are cheaper than using your hotel’s telephone service, but calling cards still offer the best international rates.
For domestic calls, consider calling from the post office, where public phone service is affordable. Another option is to buy a domestic phone card at the post office or any phone company branch. You will usually get a rate of about 1,000 VND per minute. Hotel phones are to be avoided; they are almost always significantly more expensive.
Internet phone service is another option, and it is available at most Internet cafes. The cards used may offer rates as low as 3,000 VND (20¢) per minute, but you may have to use them at the shop where you purchased them, and there may be a surcharge. In addition, the phone quality varies widely, and there may be a delay.
Internet cafes are easy to find in urban Vietnam and rates tend to be very cheap, often less than 4,000 VND per hour. You may find service in rural areas, but rates will likely be higher.