Hi just bought s8+ two days before.. found battery going down very soon after 100 % charged... like getting down to 15% after 3 hours even though never watched movie or a video or game!!!
is that usually.. I thought battery is far better than other series..
bro if possible please go into boot mode....select wipe cache data.....then do a reset
after all this charge your phone to 100% .....do not install any third party app .
Then calculate the time......u will see the results definitely and if not pls go to ur near samsung service center...bcoz 3 hours is pathetically so low for S8plus......my s8plus gives me almost a full day without a charge
