I'm going to take my smartphone with me when I'm traveling abroad to America.
I heard that it can be automatically roaming when you go abroad without applying for roaming.
How do I turn off automatic roaming?
1016 2015-11-12 Gentleman
It automatically roams when you turn off and on your cell phone.
You can use data more than anything else, so turn off using data on your phone.
As your superiors say, you don't have to make or receive calls, but data can be used without knowing.
Go into the carrier's customer center and ask them to ban the use of data overseas.
This will prevent data from being used.
I think I just need to apply for a data ban.
Then you might get a call, but you have to not answer it because it costs money just by answering it.
You can receive text messages for free.
It's a fee if you write a text message.
In the case of MMS, there is a signal that it came, but you can't see the contents.
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