When ever I download the Theme from Samsung Theme, it always shows completing download. But it won't complete the download. After long time it shows {Couldn't download the content.Try Again. (-999) }. How to fix it.

Replay me... Anyone know how to root galaxy j and c series devices[oreo].

Can anyone tell me how to root my galaxy c7 pro. I've tried some methods. but it won't work.If anyone know,Please replay me.Reason for root:install GCam