Help, need help with my phone Options

[roseheyli]

hey

i bought a samsung galaxy some weeks ago
and it finishes battery so soon
for example i put it on my desk then it had 100 % charge
when i woke up the other morning (8hours later) my phone was off!
it had finished charge

at first i thought an application had been open
but i was wrong

do u know how i can solve this?

[Egeskov]

Also what you can do is lower the brightness of the display of the phone.