What is the cheapest way to call Cambodia from Thailand?

Sayfone offers transparent per-minute pricing at 18¢/min to Cambodia. No sign-up or connection fees—you pay only for the minutes you use. Browser-based calling eliminates the need for an app or special hardware.

What is Cambodia's country code?

Cambodia's country code is +855. Always include +855 when dialing from Thailand, even though both countries are in Southeast Asia.

Do I need a special app to call Cambodia from Thailand?

No. With Sayfone, you can call from your browser on any device—phone, tablet, or computer. No app download or installation required.

Can I call Cambodian mobile numbers?

Yes. Cambodian mobiles start with 8X or 9X (e.g., 88, 89, 91, 92, 97, 98, 99). Dial +855 followed by the mobile prefix and number. No area code is needed for mobiles.

What is the time difference between Thailand and Cambodia?

There is no time difference. Both Thailand and Cambodia use Indochina Time (ICT, UTC+7) year-round. Neither country observes daylight saving time.

Can I call a Cambodian landline?

Yes. Cambodian landlines require the area code. For example, Phnom Penh landlines use area code 23, so dial +855 23 followed by the subscriber number. Provincial cities have different area codes (1X–6X).

What happens if I dial the wrong area code?

The call will not connect, and you'll hear a busy signal or error message. Double-check the area code before dialing. Phnom Penh is 23; other major cities have their own codes (Siem Reap 63, Battambang 53, etc.).

Are there any hidden fees with Sayfone?

No. Sayfone charges transparent per-minute rates with transparent per-minute pricing, sign-up walls, or surprise charges. You pay 18¢/min to Cambodia, and that's all.

Quick Answer

How to Call Cambodia from Thailand

Call Cambodia from Thailand by dialing +855, the area code, and the local number. Calls connect reliably to landlines and mobiles across Cambodia's major cities and rural areas.

Start calling

Cost tools

🇹🇭From Thailand

To Cambodia🇰🇭

$0.18

Per minute

+855

Country code

Call quality

Landline rate

$0.18/min

Mobile rate

$0.18/min

Same per-minute Sayfone rate for landline and mobile.

Average call quality

Steps at a glance

Dial +855 (country code)
Enter the area code (2–4 digits depending on region)
Dial the local subscriber number
Press Call

DIALING INSTRUCTIONS

Step-by-Step: Dialing Cambodia from Thailand

Follow these simple steps to place a call from Thailand to Cambodia using any phone service or browser-based calling app.

1
Dial the exit code (if using traditional phone)
From Thailand, dial 00 to make an international call. If using a browser-based calling service, skip this step.
```
00 (for international, then continue)
```
2
Enter Cambodia's country code
Dial +855, which is Cambodia's international dialing code.
```
+855
```
3
Enter the area code and number
Dial the area code (2–4 digits, depending on the region) followed by the local subscriber number.
```
+855 23 123456 (Phnom Penh landline) or +855 88 123456 (mobile)
```
Press Call
Complete the dialing sequence and press the Call button or key to connect.

Dialing format reference

+855

Use these patterns when entering a full international number to +855.

Mobile

+855 9X XXXXXX or +855 8X XXXXXX (7–8 digits after country code)

Landline

+855 2X XXXXXX (Phnom Penh) or +855 1X–6X XXXXXX (provincial, 6–7 digits after country code)

+855 23 123456 (Phnom Penh landline)
+855 88 123456 (Camtel mobile)
+855 97 123456 (Smart Mobile)

Major city area codes

Phnom Penh23

Siem Reap63

Battambang53

Kampong Cham42

Sihanoukville34

Sources

1
International Telecommunication Union (ITU) E.164 Numbering Plan
Validates +855 country code format

IMPORTANT RULES

Dialing Rules and Requirements

Cambodia's numbering plan uses variable-length area codes and subscriber numbers. Understand these rules to ensure your calls connect reliably.

Always include the country code +855

Even when dialing from neighboring Thailand, you must include +855 to reach Cambodia. Do not use 00855 when calling from a browser-based service; use +855 instead.

Area codes vary by city (2–4 digits)

Phnom Penh uses area code 23; provincial cities use 1X–6X (single or double digits). Always include the area code when dialing a landline.

Mobile numbers start with 8X or 9X

Cambodian mobile numbers begin with 8X or 9X (e.g., 88, 89, 91, 92, 97, 98, 99), followed by 6–7 additional digits. No area code is required for mobiles.

Landline and mobile formats are different

Landlines require an area code (e.g., +855 23 XXXXXX for Phnom Penh); mobiles do not (e.g., +855 88 XXXXXX). Check the number format before dialing.

TIMING TIPS

Best Times to Call and Calling Tips

Cambodia and Thailand are in the same time zone (ICT, UTC+7), so timing is straightforward. Use these tips to reach people during business hours and avoid peak-rate times.

Time & windows

Same Time Zone

UTC+7 year-round

Thailand and Cambodia share the Indochina Time (ICT) zone. No time conversion needed.

Business Hours

08:00 – 18:00 ICT

Best window to reach offices, government agencies, and businesses in Cambodia.

🇹🇭Optimal calling window

08:00–12:00 and 14:00–17:00 ICTAvoids lunch breaks (typically 12:00–14:00) and after-hours.

🇹🇭Early morning

06:00–08:00 ICTSuitable for urgent or personal calls; business calls may reach voicemail.

🇹🇭Evening

18:00–21:00 ICTReasonable for personal calls; avoid calling businesses after hours.

🇹🇭Late night

21:00–06:00 ICTNot recommended for business; suitable only for emergencies or pre-arranged calls.

Calling tips

Verify the recipient's preferred time before calling; Cambodia's rural areas may have limited phone access during certain hours.
Mobile networks in Cambodia often remain active outside business hours, so mobile calls may be more reliable for evening contact.
Network congestion is typically highest during 12:00–14:00 ICT (lunch break); call before or after for clearer connections.
Weekend (Saturday–Sunday) business calls require prior arrangement; Cambodian offices typically operate Monday–Friday.

Business etiquette

Open calls with a polite greeting in Khmer or English (English is widely understood in Phnom Penh and business centers).
Avoid calling during Cambodian public holidays (e.g., Khmer New Year in April, Independence Day in November) unless urgent.
Government offices often have reduced hours on Friday afternoons; plan important calls earlier in the week.
When calling a Cambodian business for the first time, confirm the correct contact name and title to show respect and professionalism.

Sources

1
World Time Zone Database
Confirms UTC+7 (ICT) for both Thailand and Cambodia year-round

TROUBLESHOOTING

Troubleshooting and Connection Issues

International calls from Thailand to Cambodia are straightforward, but connection issues or special number types can sometimes cause problems. Here's how to resolve them.

Call doesn't connect or drops immediately

Verify the complete number format: +855 (country code), area code or mobile prefix, and subscriber number. Check for typos, especially the area code. If the number looks correct, try calling again after a few minutes; network congestion may have caused the drop. From Thailand, ensure your calling service has international calling enabled.

Area code not recognized

Confirm the city's area code using a local directory or contact the recipient. Major cities (Phnom Penh 23, Siem Reap 63) are widely known, but smaller towns may have less familiar codes. If the area code is correct but the call fails, the recipient's number may be inactive or the landline service may be unavailable.

Mobile call connects but sounds garbled

Cambodia's mobile networks can experience congestion during peak hours. Try calling during off-peak times (early morning or mid-afternoon). If garbled audio persists, ask the recipient to move to a location with stronger signal, or switch to a different mobile carrier (Camtel, Smart, or Metfone are the main providers). Browser-based calling may help if your local Thai provider's international line is degraded.

Special numbers (government, hotlines, toll-free) may not work

Some special services (e.g., government hotlines, 1XX emergency numbers, or 9XX toll-free numbers) may not route internationally. If you need to reach a government office or special service, verify the number and try contacting during business hours, or use a local mobile phone to reach them from within Cambodia.

Savings

See what you could save

Adjust the tools below to compare Sayfone with typical retail pricing for calls to Cambodia. Start with one call, then layer on monthly volume to see the bigger picture.

How to use these tools

Sayfone uses your live rate for calls to Cambodia — the same basis as the rest of this page.
First, estimate savings on a single call length. Then, model a full month of minutes versus typical retail benchmarks.
Retail competitor rows are illustrative — not a quote from any carrier.

One call — instant savings

Set duration and country. See Sayfone vs. an illustrative retail rate for the same call.

I'm calling…

Country

▾

Call type

Call duration12 minutes

1 min10 min20 min30 min40 min50 min1 hr

Enable enterprise discount

Save additional 40% (enterprise)

Your call

Your call will cost

$2.16

$0.18 per minute

Sayfone$2.16$0.18 / min

Competitors$5.40$0.45 / min

Your savings$3.24$0.27 / min

That's 60% less than competitors

Call Cambodia now

Every month — stack it up

Set monthly minutes and call type. Bars compare Sayfone to common retail benchmarks for the same volume.

Monthly call minutes

Drag slider to adjust

220

min / month

Call type

AT&T / Verizon$1,940

~$8.82/min

T-Mobile$1,465

~$6.66/min

Calling cards$871

~$3.96/min

Google Voice$198

~$0.90/min

Sayfone$40

$0.180/min

Annual saving vs. AT&T

Based on 220 min/month

$22,810

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Before you go

Still planning your call to Cambodia?

Open the full Thailand to Cambodia guide, check rates, or browse other how-to guides from Thailand.

Dialing guide

Thailand to Cambodia calling guide

Per-minute rates, savings calculator, and what to expect on this route.

Rates

What it costs to call Cambodia

See Sayfone’s per-minute rate for Cambodia and how it compares before you dial.

Route guides from Thailand

Other how-to guides from Thailand

FAQ

Frequently Asked Questions

Quick answers to common questions about calling Cambodia from Thailand.

Can't find your answer? Contact Sayfone support.

Contact support

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