why does my phone die throughout the night when it's not in use
So I'll have my phone charged to either full battery or above 80%, and without fail, through 6-9hours of sleep, I'll wake up to it either being 9% or dead flat, which is frustrating because it's brand new? iPhone 6s..
I don't like leaving it on charge alllllll night long because I don't want to stuff my phone, but I can't leave for a full day of work with less then 10%....
Don't want to have it on airplane mode sometimes because what if I have an important call or message come through the night or in the morning.
What do I do,