How much does it cost to call Vietnam from South Korea with Sayfone?

Sayfone charges 22¢/min to call Vietnam from South Korea. This rate applies to both landline and mobile numbers across Vietnam, with no connection fees or hidden charges.

What is the country code for Vietnam?

Vietnam's country code is +84. When calling from South Korea, dial your exit code (001 from a landline, or use the + symbol on a mobile), then 84, followed by the local number without the leading zero. Sayfone handles this formatting automatically.

What is the time difference between South Korea and Vietnam?

South Korea (KST, UTC+9) is exactly 2 hours ahead of Vietnam (ICT, UTC+7). Neither country observes daylight saving time, so this 2-hour difference stays constant all year. When it's 10:00 AM in Seoul, it's 8:00 AM in Hanoi.

Do I need to install an app to call Vietnam with Sayfone?

No. Sayfone works directly in your web browser on any smartphone, tablet, or computer. There's nothing to download or install — just visit Sayfone, enter the Vietnam number, and connect.

What are the area codes for major cities in Vietnam?

The main area codes are: Hanoi (24), Ho Chi Minh City (28), and Da Nang (236). When dialing internationally, drop the leading zero — so Hanoi's domestic prefix 024 becomes just 24 after the +84 country code.

Can I call Vietnamese mobile phones with Sayfone?

Yes. Sayfone's 22¢/min rate covers calls to both Vietnamese landlines and mobile phones. Vietnamese mobile numbers typically start with prefixes like 03x, 07x, 08x, or 09x in domestic format.

When is the best time to call Vietnam from South Korea?

For family calls, evenings in Korea (8–10 PM KST / 6–8 PM Vietnam time) work well. For business calls, the full overlap between Korean and Vietnamese office hours runs from about 10:00 AM to 5:00 PM KST (8:00 AM to 3:00 PM in Vietnam).

Why is the South Korea–Vietnam calling route so popular?

Vietnamese nationals comprise 16% of migrants in South Korea and 26.8% of all international students, while 178,000 Koreans live in Vietnam. Combined with $62.8 billion in bilateral trade, this creates one of the highest-volume calling corridors in Asia.

South Korea → Vietnam

Call Vietnam from South Korea for 22¢/min

Reach family, colleagues, and business contacts across Vietnam with crystal-clear calls — directly from your browser, no app required.

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Just 22¢/min to Vietnam landlines and mobiles
No app download — call straight from your browser
Transparent per-minute billing, no hidden fees

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🇰🇷From South Korea

To Vietnam🇻🇳

$0.22

Per minute

+84

Country code

Excellent

Call quality

🇰🇷

Active callers now: 252

Landline rate

$0.22/min

Mobile rate

$0.22/min

Same per-minute Sayfone rate for landline and mobile.

Average call quality

Estimate

Calculate your cost

Drag the slider to set your monthly minutes and call type for Vietnam. The totals below estimate what that volume could cost per month at typical retail rates compared to Sayfone—so you can see the full picture before you dial.

Monthly call minutes

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220

min / month

Call type

AT&T / Verizon$2,372

~$10.78/min

T-Mobile$1,791

~$8.14/min

Calling cards$1,065

~$4.84/min

Google Voice$242

~$1.10/min

Sayfone$48

$0.220/min

Annual saving vs. AT&T

Based on 220 min/month

$27,878

Try Sayfone Free

WHY THIS ROUTE MATTERS

Why So Many People Call Vietnam from South Korea

The South Korea–Vietnam corridor is one of Asia's fastest-growing international calling routes, driven by deep family ties, a massive student community, and billions in bilateral trade.

Family & Diaspora Connections

Vietnamese nationals make up 16% of migrants in South Korea, and 178,122 overseas Koreans live in Vietnam. Cross-border families need regular, affordable voice calls to coordinate daily life, share news, and stay emotionally connected across the 2-hour time difference.

Vietnamese are among the top 3 newcomers to South Korea, comprising 16% of migrants with 178,122 overseas Koreans in Vietnam
Vietnamese workers and students in Korea and Korean expatriates in Vietnam both generate high volumes of cross-border family calls

Students Staying in Touch

Over a quarter of all international students in South Korea are Vietnamese — 26.8% of the total, with 33,000 new arrivals in the first half of 2024 alone. Students call home frequently to update parents, coordinate finances, and stay connected during semesters abroad.

26.8% of all international students in South Korea are Vietnamese, with 33,000 new student arrivals in H1 2024 alone

Business & Manufacturing Links

Vietnam is South Korea's 3rd largest export destination, with $62.8 billion in trade (8.9% of total Korean exports) in 2025. Korean executives, factory managers, and supply chain teams need reliable voice calls to coordinate with partners, suppliers, and subsidiaries across Vietnam.

Vietnam is South Korea's 3rd largest export destination at $62.8 billion (8.9% of total exports) in 2025

SIMPLE PRICING

Rates That Make Sense

Calling Vietnam from South Korea with Sayfone is straightforward — one transparent rate, no connection fees, no subscriptions required.

Did You Know?

With $62.8 billion in bilateral trade and over 178,000 Korean expatriates living in Vietnam, the South Korea–Vietnam calling corridor is one of the busiest in Asia. A 30-minute call to Vietnam with Sayfone costs just $6.60 — less than a cup of specialty coffee in Seoul.

Call Vietnam Now

Sayfone Rates to Vietnam

Destination	Type	Rate/min
Vietnam	Landline & Mobile	22¢/min

Rates are billed per minute with no connection fees. Pricing shown in USD.

GETTING STARTED

How It Works

Calling Vietnam from South Korea takes under a minute to set up. No app installs, no accounts to verify — just open your browser and go.

Instant access

Step 1

Open Sayfone in Your Browser

Visit Sayfone from any browser on your phone, tablet, or computer in South Korea. No app download or registration needed to get started.

Dialer

+00 000 000 00

123

Start Calling Now

Step 2

Enter a Vietnam Number

Type or paste the Vietnam phone number you want to reach. Sayfone automatically formats it with the +84 country code so you don't have to worry about dialing prefixes.

HD audio from your browser

Step 3

Connect and Talk

Hit call and you're connected at 22¢/min. Enjoy clear audio quality with transparent per-minute billing — see your cost in real time.

COMMON HURDLES

Challenges of Calling Vietnam from South Korea

International calls between South Korea and Vietnam can come with frustrating obstacles. Understanding these challenges helps you choose a smarter calling solution.

Expensive Carrier Rates

Major Korean carriers often charge premium rates for international calls to Vietnam. Per-minute costs can add up quickly, especially for the long family catch-ups and business calls this corridor demands.

Confusing Dialing Codes

Calling Vietnam from South Korea requires the Korean exit code (001), Vietnam's country code (+84), and the correct area or mobile prefix — all while remembering to drop the leading zero. Mistakes lead to failed connections.

Time Zone Coordination

South Korea (KST, UTC+9) is 2 hours ahead of Vietnam (ICT, UTC+7). While the gap is small, it still requires coordination — especially for business calls that need to land during Vietnamese office hours.

Unreliable Free Alternatives

Free messaging apps work well when both parties have strong internet, but rural areas in Vietnam can have inconsistent data coverage. For reaching landlines or older mobile phones, a direct voice call is often the most reliable option.

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Call duration12 minutes

1 min10 min20 min30 min40 min50 min1 hr

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Your call

Your call will cost

$2.64

$0.22 per minute

Sayfone$2.64$0.22 / min

Competitors$6.60$0.55 / min

Your savings$3.96$0.33 / min

That's 60% less than competitors

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INSIDER TIPS

Calling Hacks for the South Korea–Vietnam Route

Make the most of every call with timing strategies, cultural tips, and practical advice tailored to this corridor.

Time & windows

Best for Family Calls

8:00 PM – 10:00 PM KST

6:00 PM – 8:00 PM in Vietnam — after dinner, before bed. Ideal for relaxed family conversations.

Best for Business Calls

10:00 AM – 5:00 PM KST

8:00 AM – 3:00 PM in Vietnam — full overlap with Vietnamese office hours.

Best for Student Check-ins

9:00 PM – 11:00 PM KST

7:00 PM – 9:00 PM in Vietnam — parents are home and available after work.

🇰🇷Vietnamese office hours

8:00 AM – 5:00 PM ICT (10:00 AM – 7:00 PM KST)Lunch break typically 12:00 – 1:30 PM ICT

🇰🇷Korean office hours in Vietnam time

7:00 AM – 4:00 PM ICTOverlap window: 8:00 AM – 4:00 PM ICT / 10:00 AM – 6:00 PM KST

🇰🇷Weekend family window

10:00 AM – 12:00 PM KST (8:00 AM – 10:00 AM ICT)Good for weekend morning catch-ups when both sides are relaxed

Calling tips

Save Vietnam contacts in +84 format (e.g., +84 24 1234 5678 for Hanoi) so your phone or browser auto-formats the number correctly.
South Korea is always exactly 2 hours ahead of Vietnam — neither country uses daylight saving time, so this never changes.
If calling a Vietnamese mobile, drop the leading 0: a local number like 0987654321 becomes +84 987654321 internationally.
For business calls during Vietnamese holidays (Tết, Reunification Day, National Day), expect reduced office availability.
Use Sayfone's browser-based calling to avoid roaming or carrier surcharges — especially useful for Korean expats visiting Vietnam.

Business etiquette

Vietnamese business culture values relationship-building. Start calls with brief personal pleasantries before diving into business topics.
Address Vietnamese colleagues by their title and given name (the last part of a Vietnamese name), e.g., 'Mr. Minh' rather than the family name.
Avoid scheduling calls during Vietnamese lunch break (roughly 12:00 – 1:30 PM ICT / 2:00 – 3:30 PM KST) as many offices close during this time.
Korean formality translates well in Vietnamese business settings — both cultures value hierarchy and respectful communication.
If coordinating between Korean and Vietnamese manufacturing teams, confirm the factory shift schedule first — production facilities may operate outside standard office hours.

Sources

1
Wikipedia – Time in South Korea
KST (UTC+9) reference for time zone data
2
Vietnam Teaching Jobs – Vietnam Time Zone Guide
ICT (UTC+7) reference for Vietnam time zone

TOP DESTINATIONS

Popular Cities to Call in Vietnam

Whether you're reaching family in Ho Chi Minh City, students in Hanoi, or a factory in Da Nang, here's what you need to know about calling Vietnam's major hubs.

Ho Chi Minh City

Call Vietnam from South Korea

Vietnam's largest city and commercial capital, Ho Chi Minh City (area code 28) is home to many Korean-invested factories and a large Korean expat community. It's the most-called destination on this route for both business and personal calls.

Best time to call from South Korea: 10:00 AM – 6:00 PM KST (8:00 AM – 4:00 PM local)

Hanoi

Call Vietnam from South Korea

Vietnam's capital city (area code 24) is a hub for government, education, and Korean diplomatic operations. Many Vietnamese students in Korea have family in Hanoi, making it a top destination for personal calls.

Best time to call from South Korea: 10:00 AM – 6:00 PM KST (8:00 AM – 4:00 PM local)

Da Nang

Call Vietnam from South Korea

Central Vietnam's largest city (area code 236) is a growing industrial and tourism hub with increasing Korean investment. Korean manufacturers with operations in the central region rely on regular calls to Da Nang–based teams.

Best time to call from South Korea: 10:00 AM – 6:00 PM KST (8:00 AM – 4:00 PM local)

Sources