Is it necessary to open international roaming abroad?

You must open international roaming when you go abroad.

When going abroad, if you want to make phone calls, send text messages or use data services, you need to open international roaming. International roaming is a service that allows mobile phone users to use their own mobile phone network to communicate with foreign countries. If international roaming is not enabled, the mobile phone will not be able to connect to the local mobile network and use the communication function normally. Opening international roaming can ensure that you keep in touch with your family, friends and people working abroad, and you can get online information at any time.