You can reserve them on each operator's website

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This option can be a solution for travelers who are traveling for a period of three months, since the process of purchasing a SIM in Vietnam has several requirements.

Thirdly, you have the SIM card from malaysia gambling data Vinaphone , another of the major operators in Vietnam, alongside Vittel and Mobifone. It offers wide coverage throughout the country, including rural and urban areas.

This company also offers a SIM for tourists, called VinaPhone Tourist SIM and has a basic plan that includes 1 GB daily for 15 days, 50 SMS text messages and 100 minutes for national and international calls.

The plan is ideal for short trips, and once the basic benefits are exhausted, additional fees will apply : VND 1580/min for domestic calls, VND 250/SMS for messages and VND 75 for every additional 50KB of data.

Holafly Virtual SIM: Visit the online store and search for Vietnam.
Vittel and Vinaphone SIM cards: buy them at the main airports: Noi Bai, Son Nhat and Da Nang; in official operator stores and authorized local stores.
SIM Card Options for Cambodia
In this section we will explore the most popular SIM card options in Cambodia . We will analyze their features and main benefits so that you can make the best decision to enjoy your Internet connection and calls, without paying roaming fees.