HOW long should the battery life last for a S5S
It all depends on how old the battery is, how you went about charging it, how often and what you use your phone for. Here is an article to give you an idea.
Samsung Galaxy S5: Battery Life and Verdict
I've had my S5 for 14 months ish and use it regularly for work, play and personal. I often let it die all the way before I charge it up; mostly to avoid work for the hour or so it takes to charge again and I find myself charging my phone once every 24 to 30 hours. Just depends if I've streamed anything battery consuming; youtube, pandora, games.
