After this update in samsung galaxy s9 battery drain very fast. Please give me solutions.

s9 battery not good its drain very fast .... how to fix it ?

when samsung launch oreo in india for s7 edge ?

sir my s7 edge sim tray break in side and my sim sd card slot pin also damage in side. so please confirm me it can be repair / replace only in samsung service center or not ? or how many cost to repair it. im waiting your suggestion.

its good news for s7 edge costmers. samsung launch oreo please find the attachment. 