Had wifi on with the phone off power at my house and moderately using the phone. After 6 hours, I had only 25% battery loss. Normally when I go to work I don't even get a chance to mess with my phone much so it's just standard battery drain on idle -- usually 10% per hour. 4G LTE truly takes a ton of battery and I know it's beating a dead horse here, but just wanted to relay my findings. I think that if/when they release a true 4G toggle or improves the efficiency of the LTE chip, we will see a dramatic improvement.