Why is my samsung S8 cannot get signal for data in other country?

[Android Central Question]

I bought my samsung S8 in Philippines and im going back to Indonesia. When i put my Indonesia Sim Card, it dont have signal for data ( 3g or 4g ) and only can use for call and text only. Please help me. Thanks

 

[belodion]

*Perhaps it doesn't support the right radio bands. Your carrier will advise.