I've heard that if you use an older Internet like 4G it will drain the battery quicker. but I don't know if it's true. I've used 4G LTE and my phone last all day depending how I use it. but recently I got my data throttled because I went over 5GB on my AT&T unlimited grandfather data plan. Take into consideration that 4G LTE uses a lot of data. but now I want to switch off LTE and use 4G instead so my data won't run up as quick as 4G LTE. but I want to know if it will drain the battery on 4G or it won't? please help thanks! People that have an iPhone 5 or have knowledge on this question. thanks again