Can the mobile phone card be used normally when going abroad?

The mobile phone is a global card in China, and it can continue to be used abroad, but only if the international roaming function is enabled, otherwise the mobile phone will not be able to receive network signals abroad.

You must change your foreign communication card when you go abroad. Some mobile phones don't work abroad. Mobile phones should support roaming national networks. For example, the United States must use 1900MHZ mobile phones, and South Korea must use CDMA mobile phones. International roaming calls and short messages are expensive, so it is generally recommended to only receive short messages (free of charge).

Extended data

International roaming means that users can also enjoy a series of services provided by telecom operators abroad, such as phone calls, short messages, multimedia messages, mobile Internet access and so on.

Since May 1 2065438, the international data roaming charges of more than 80 popular countries and regions in Asia, Europe and America, such as Hong Kong, Macao, Taiwan, Singapore, Japan, South Korea and Australia, Britain, France and Germany, Russia, the United States and Canada, Brazil, have been adjusted to 5 yuan, which is the standard data roaming price applicable to all post-paid outbound users and can be enjoyed without customization. More than 80 different countries and regions

It is divided into 5MB and 3MB files, which can be automatically superimposed when the flow runs out, with a maximum of 16 times in the day. If it is less than 5MB/3MB, it will be charged in 5 yuan. When the roaming fee reaches 80 yuan, the network traffic will be automatically suspended to avoid the unlimited roaming fee.

International Roaming of Resources _ Baidu Encyclopedia