facing some problem

[Sumitsaini]

 Can yoy plz  add a notification light in s10 through software update or not 

[mrankeet]

There is already one. Try Goodlock. Search in galaxy store. And download edgelighting+ its has black hole option

[Sidhabhi]

Bro, it's already there. Download Edge lighting+ and in that select black hole edge lighting effect.
Download it from the galaxy store.
Settings>display>edge screen>edge lighting>edge lighting style>edge lighting effect...