Do you guys use 3G or LTE on the iphone?

Just wondering because people are telling me that 3G uses less battery than LTE.

3G really uses less battery but it's only a minimal difference. Just switch your data usage to off if you're not using it to conserve battery. But if it's on, it doesn't matter if you use 3G or LTE, I just use LTE for faster connection.

I don't use an Iphone

Its the other way around. LTE uses less battery than 3G. (Though it may depend on the phone in question)