I too have found WIFI drains the battery more than LTE, however if you're LTE connection isn't the best it will drain the battery like crazy. I can also hear buzzing through my desktop speakers every 30 - 60 seconds, something is obvious running in the background. All the programs should select the most efficient signal/setting available when the phone is in standby, WIFI should also be turned off unless you select the always on option. IMHO this would fix many of the ongoing Battery issues. It's also clear WP8 isn't very efficient for some reason, a better update than Portico could resolve this issue as well.