Welcome to Android Central! So that we can have a better idea of your phone's battery usage, it would help to see some battery stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:
1. The main
Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).
http://forums.androidcentral.com/gen...d-central.html
You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.
Also, make sure your Google Photos app is not set to back up photos automatically, or make sure it's only doing so when you're on wi-fi or when you're charging.
And when you have a chance, head over to the Intros forum and tell us something about yourself!
Introductions - Android Forums at AndroidCentral.com