If you do not live in a 4G LTE area than you will want to go to Wireless & Network in settings and go to the Mobile Networks and in system select it is set as default "LTE/CDMA" select CDMA only and it will stop looking for the LTE network. I did this and my phone went from going dead at 2pm to being at 30% battery when I go to bed at 11pm
Also Juice Defender does this as well?
Also Juice Defender does this as well?