How to talk on the phone with a friend in a foreign country

pu1. You can apply for roaming and leave the country. It's just that the phone bill is very expensive. It's because it's not connected overseas like this, but overseas-domestic-domestic-foreign like this. That's why there are a lot of people who answer the phone.

2017-11-30

OK

pu2. The simplest way would be roaming. Or you can contact me through Kakao Talk in the area where Wi-Fi is available

2017-12-01

OK

pu3. There's a way to buy a local USIM if it's the cheapest. You can also use data, so I recommend buying a local USIM

2017-12-01

OK