What is the most convenient way to communicate in Vietnam?

You can go directly to the business office with your ID card to activate international roaming on your mobile phone and apply for an international roaming package in Vietnam.

You can also buy a local phone card after arriving in Vietnam, which costs about RMB 30, and then buy a recharge card for about RMB 50. Incoming calls are free, making calls nationwide is also very cheap, and you can also use your data. , very durable.