If this is more appropriate to the battery forum, I won't be offended if it's moved there . . .
Obviously this app allows us to toggle back and forth between 3G and 4g, which conserves battery life. But are these savings realized if you keep the phone in 3G mode while not online, but switch to 4G whenever you want to surf? In other words, does a 4G phone burn though its charge simply by being on standby in 4G? And if my reasoning here is sound, is this particular app the best one out there for this?