Originally Posted by Grey Hawk
Should I return it?
If you have given up on the S5 period, sure. If you mean that you think your particular phone is defective, then no. There is no evidence whatever that your phone is defective. The S5 battery life is in fact very good. But like all things it varies because everyone uses their phones differently..
Your figures of 14 hours battery life (2.5 - 3.5 hours screen on) are on the low side for a S5, but hardly abysmal. If you do a bit of tweaking and update some apps or your firmware, I have no doubt that you could almost double that. Battery life is variable, depending on what apps you have installed and how you use your phone. Some apps like Skype or Tunein are notorious battery hogs. As is leaving wifi on when the wifi signal is weak or non existent.
Your post gives an impression of you having unrealistic expectations. Nevertheless, if you are still happy, then return it and get a different phone model. But there is nothing wrong with your handset and trying to exchange it for another S5 won't change anything. It just needs a bit of tweaking. If you play with the settings a bit you should be able to get ~ 20 hours, including 5 - 8 hours of screen time, rather than your current 14 /3. Use that as a benchmark for how you want to proceed.
If you want a better idea if you apps are the issue, then temporarily uninstall all of your third party apps. Then see what difference it makes running only stock apps for one day.
S5 battery stats thread