iphone 5s

Hi All My Iphone 5s battery ONLY lasts around 4 hours MAX, that's with EVERYTHING OFF, all apps, wifi search, etc, etc..... I 'think' this is due to the last update ? I am on the latest now.... Phones don't interest me much BUT it has been great for over a year. I have looked at the battery...

Iphone 5s as new, only used a handful of times by the trouble and strife and she upgraded to the 6s, brand new and has zero scratches front and back Has plug but no lead or headphones, I think one of the kids has borrowed them , but I know I will never see them again Phone has been set to...