Vietnam +84
To call Vietnam from abroad, dial your exit code (or +), then 84, then the local number without its leading 0. Written in full: +84 912 345 678.
The country calling code for Vietnam is +84. A number starting +84 or 0084 is a call to or from Vietnam. From abroad: +84 912 345 678.
To call Vietnam from abroad, dial your exit code (or +), then 84, then the local number without its leading 0. The +84 code identifies the country; the following digits identify the line (landline or mobile).
How to call Vietnam from abroad
011 84 912 345 67800 84 912 345 6780011 84 912 345 678+84 912 345 678912 345 678 is a real-format Vietnam mobile number (example from the ITU-T numbering plan): replace it with the number you were given, without its leading 0.
Vietnam area codes
In Vietnam, landlines usually include an area code after +84 (without its leading 0). Mobiles have no area code.
Number format
210 1234 567from abroad+84 210 1234 567912 345 678from abroad+84 912 345 678Landline numbers in Vietnam have 10 digits after the country code; mobile numbers have 9 digits. The national prefix 0 is only dialled inside the country — drop it after +84.
Calling abroad from Vietnam
To call another country from Vietnam, dial the exit code 00 (or + on a mobile), then the country code, then the number. From Vietnam to the United States, for example: 00 1 201 555 0123.
A Vietnam number in international format is written +84 …. The + stands for the exit prefix (00 in much of the world, 011 in North America). Switching to international format, drop the leading 0.
Cheapest ways to call Vietnam
With internet on both ends, apps like WhatsApp, Signal or FaceTime call Vietnam for free. To reach a number without an app, VoIP services are usually cheaper than your operator’s international rate.
Frequently asked questions
What country has the code +84?
Vietnam has the country calling code +84.
How do I call Vietnam from the United States?
Dial 011, then 84, then the local number without its leading 0 — for example 011 912 345 678.
What does +84 mean?
It is the international dialing code for Vietnam. The + stands for your exit code (00 in much of the world, 011 in North America).
Is +84 mobile or landline?
The +84 code identifies the country, not the line type; Vietnam landlines and mobiles share it.
A country code covers a whole nation; the full number depends on the city and operator.
Mobile network codes in Vietnam
Every mobile network is identified by a mobile country code (MCC) and a mobile network code (MNC). They appear on your phone when it roams, in SIM settings and in any network lookup. Vietnam has 4 network operators with their own infrastructure:
| Network | MCC-MNC | Technologies | Subscribers |
|---|---|---|---|
| ViettelMinistry of Defence | 452-04 | 3G · 4G · 5G | 66.0 M2019 |
| VinaphoneVietnam Posts and Telecommunications Group | 452-02 | 3G · 4G · 5G | 26.0 M2019 |
| MobiFoneMinistry of Public Security | 452-01 | 3G · 4G · 5G | 23.0 M2019 |
| VietnamobileHanoi TelecomHutchison Asia Telecom | 452-05 | 3G | 6.00 M2019 |
A struck-through generation has been switched off on that network. MCC-MNC: ITU-T E.212 codes as listed on Wikipedia.
2G and 3G switch-off timeline
- Vietnammobile — 2G (GSM) switched off
- Viettel — 2G (GSM) switched off
- Vinaphone — 2G (GSM) switched off
- Mobifone — 2G (GSM) switched off
- All networks — 3G () planned switch-off
Keeping a number when changing network
- Mobile number portability
- since 2018-11-16
- Porting time
- 2 day(s)
- Cost to the customer
- 60,000 VND (postpaid) 50,000 VND (prepaid)
Because numbers can be ported, the prefix of a mobile number only tells you which network first issued it, not the network it uses today.
Received a call from a Vietnam number? Check it with the phone number lookup: type of line, format and local time.
Source: Wikipedia — lists of mobile network operators, mobile network codes, 2G and 3G phase-out, mobile number portability (CC BY-SA 4.0). Subscriber counts as published by each operator or regulator at the date shown.
Phone rules in Vietnam
The rules a caller, a visitor or a new resident runs into in Vietnam, each with its source.
| ID to buy a SIM | Every mobile subscription must be linked to a verified identity: since 15 April 2026 (Circular 08/2026/TT-BKHCN, Ministry of Science and Technology) all new subscriptions require facial biometric verification cross-checked against the National Population Database and identity database, via VNeID, operator apps or in person. When a SIM is moved to a different device, outgoing calls/SMS are suspended until facial re-verification (two-way suspension after 30 days, contract terminated 5 days later). The documents accepted for foreign tourists and any per-person SIM limit were not verified from an official source.en.vietnamplus.vn |
|---|---|
| Reporting scam calls | Spam and scam calls can be reported to the ministry's short code 156 (piloted since 1 November 2022), including by free SMS with the syntax 'S <source phone number> <description>' sent to 156 (or 5656). No official source was found for a national do-not-call registry.mst.gov.vn |
| Emergency numbers | 113 police, 114 fire and rescue, 115 medical emergency/ambulance; calls to these numbers from fixed and mobile phones are free (Circular 02/2020/TT-BTTTT).mst.gov.vn · mst.gov.vn |
Checked on 28 September 2026. Rules on SIM registration and calling apps change often: confirm with the regulator or the operator.