How to completely block international calls

pu1. You can go into the carrier's customer center and apply for an international call rejection service. Then, when an international call that starts with 00x (International Phone Identification Number) comes, it is automatically blocked and a text message notifies you that an international call has come

2017-12-11

OK

pu2. http://blog.naver.com/service_ace/10177828019
You can refer to the content here.

2017-12-11

OK