I get 14 to 15 hours out of mine and I use the Internet on WiFi a lot. I watched some YouTube videos on extending battery life. My phone is always in power saving. I have the Bluetooth and location turned off except for when I need it. I never use auto lighting. The brightest I set my phone is half bar. Indoors it's on a quarter bar or less. When I charge it on my wireless charger, I put it on ultra power saving mode. When I know that I'm not going to use it for a while, I put it on ultra power saving mode. I can get over 20 hours on my battery like that. I still receive phone calls, text messages, and alarms. A video said to set your home screen to black and white because the more light there is the more the battery uses. I don't do that. The battery saving measures I use work well. I almost forgot, when I'm away from home or anywhere where I'm using the Internet on WiFi. Your phone will continuously search for WiFi when you have WiFi turned on and that drains your battery.
AnimalLover