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Cell Phones, Wi-Fi & Communications in Hanoi

Welcome to our comprehensive guide on Cell Phones, Wi-Fi, and Communications in Hanoi, Vietnam. In an era where staying connected is essential, this guide is designed to help residents and travelers navigate the vibrant capital city of Vietnam with ease.

Hanoi, a city steeped in history and culture, boasts a robust communications infrastructure that ensures you can keep in touch, access the internet, and seek assistance when needed.

Whether you’re a resident or a visitor exploring this captivating city, our guide will provide valuable insights into mobile networks, Wi-Fi availability, emergency contact information, and essential communication services.

Discover how to stay connected and informed in Hanoi as we delve into cell phones, Wi-Fi hotspots, and the vital resources that keep this city connected.

Cell Phones, Wi-Fi & Communications in Hanoi

Cell Phones:

Mobile Network Providers

Vietnam has several mobile network providers, with the most prominent ones being Viettel, Vinaphone, Mobifone, and Vietnamobile.

These providers offer a range of prepaid and postpaid plans for voice calls, text messages, and mobile data.

SIM Cards

Visitors to Hanoi can easily purchase local SIM cards at the airport, convenience stores, or mobile phone shops.

You will need to present identification to register your SIM card, as required by Vietnamese law.


Hanoi, the capital city of Vietnam, has excellent mobile network coverage, including 4G and 4G+ services.

In most urban and suburban areas, you can expect good cell phone signal quality.


Public Wi-Fi

Many public places in Hanoi offer free Wi-Fi, such as hotels, restaurants, cafes, and tourist attractions.

This is particularly true in popular tourist areas and the Old Quarter.

Internet Cafes

Internet cafes (known as “quán game” or “net cafe” in Vietnamese) are typical in Hanoi, and they provide internet access for a fee.

They may have more powerful connections than on a mobile network.

4G and 5G

As of my last update, 4G was widespread in Hanoi, and 5G was starting to roll out in major urban areas.

This would likely have expanded further by now.

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Landline Phones

Traditional landline phones are less commonly used nowadays, as most people rely on mobile phones for communication. However, landline services are still available.

International Calls

Making international calls from Hanoi is straightforward. You can use IDD (International Direct Dialing) codes or purchase international calling cards.

Messaging Apps

Like in many countries, messaging apps such as Facebook Messenger, WhatsApp, and Viber are famous for communication.

Zalo is a popular messaging app widely used in Vietnam and can be handy for connecting with locals.

However, do note that these messaging apps require an internet connection.


Vietnamese is the official language, and English is commonly spoken in tourist areas and by younger generations. Many establishments catering to tourists will have English-speaking staff.

Dial Code

The dialing code for Hanoi, Vietnam, is +84, the international dialing code for Vietnam.

To call Hanoi from abroad, you would typically dial your international access code (e.g., 00 in many countries), followed by the country code (+84 for Vietnam), and then the local area code (which is 24 for Hanoi) before entering the specific phone number.

So, the format for calling Hanoi from abroad is typically +84 24 XXXX XXXX, where “XXXX XXXX” represents the local phone number.

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Useful & Emergency Numbers in Hanoi

In Hanoi, Vietnam, as in many other places, there are essential, practical, and emergency numbers to be aware of. Here are some of the most important ones:

Emergency Services:

  • Police: 113
  • Fire Department: 114
  • Medical Emergencies and Ambulance: 115
  • Search and Rescue: 112

Tourist Information:

  • Hanoi Tourism Information Center: 024 3942 3760

Other Important Numbers:

  • Hanoi Post Office: 024 3943 1447
  • Hanoi Train Station: 024 3873 1754
  • Lost and Found (Public Transport): 024 3846 2162
  • Vietnam Airlines (Hanoi Office): 024 3934 7237
  • Electricity and Water Supply (Hanoi Power Corporation): 1900 5555

Please note that when calling these numbers, it’s best to have someone who speaks Vietnamese, or you may encounter language barriers.

Additionally, if you’re a tourist, you can often get assistance from your hotel or accommodation in case of emergencies or need information.

For more specific and up-to-date information, you should check with local authorities, your accommodation, or local guides, as contact numbers and services can change over time.

Mobile Network ProvidersViettel, Vinaphone, Mobifone, Vietnamobile, and others.
SIM CardsAvailable at the airport, convenience stores, and mobile phone shops. Requires identification for registration.
Wi-FiFree public Wi-Fi in hotels, restaurants, cafes, and tourist attractions. Internet cafes are also typical.
Cellular CoverageGood coverage in urban and suburban areas, including 4G and 4G+ services.
Emergency NumbersPolice: 113
Fire Department: 114
Medical Emergencies and Ambulance: 115
Search and Rescue: 112
Tourist InformationHanoi Tourism Information Center: 024 3942 3760

Additional Tips:

  • If you plan on making frequent international calls, consider purchasing an international calling package from your mobile network provider to save money.
  • Keep a portable charger with you when going out, as using data and GPS navigation on your phone can drain the battery quickly.
  • When using public Wi-Fi, be cautious of transmitting sensitive information such as banking details or personal passwords. It’s best to use a VPN (Virtual Private Network) for added security.
  • When communicating with locals, try learning a few basic Vietnamese phrases. It’s not only helpful but also appreciated by the locals.
  • Check my guide for the best apps to download before your trip to Hanoi for more helpful information on communication and navigating the city.
  • Have fun and stay connected while exploring Hanoi! Enjoy all the benefits technology has to offer in this beautiful city. So, don’t forget to pack your cell phone and make sure you have a local SIM card or an international roaming package before your trip.

In conclusion

Hanoi, Vietnam, offers a well-established and convenient communications infrastructure for residents and visitors.

With various mobile network providers, readily available SIM cards, and widespread coverage, staying connected via cell phones is hassle-free.

Additionally, free public Wi-Fi in many places, including popular tourist areas, makes it easy for travelers to access the internet and stay connected.

In times of need, Hanoi provides access to essential emergency services, with dedicated phone numbers for the police, fire department, medical emergencies, and search and rescue.

For tourists seeking assistance or information, the Hanoi Tourism Information Center is just a phone call away.

Hanoi remains well-equipped to meet the communication needs of its residents and guests, fostering a connected and accessible experience in this vibrant city.

Travelers to Hanoi can expect to enjoy the benefits of modern communication services during their visit. To stay current with any developments or changes in Hanoi’s communication infrastructure, it is advisable to check with local authorities and service providers.

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Matan Cohen

Hey there! I'm Matan, an avid lover of Hanoi. In my free time, you can usually find me exploring the city's vibrant streets, sampling the delicious local cuisine, or immersing myself in the diverse culture of Vietnam.

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2-Day Sa Pa Tour from Hanoi (with Homestay & Trekking)
About Me

Hey, I’m Matan! As a passionate, thrill-seeking traveler, I instantly connected with Hanoi.

From the bustling streets and flavorful street food to the unique culture and vibrant nightlife – this dynamic city held something new and exciting around every corner.

Exploring further revealed hidden gems – peaceful parks, colorful temples, friendly locals – that truly made it a place I wanted to call home.

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