Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.


macrumors 6502
Original poster
Sep 4, 2017
Yorkshire, United Kingdom
I live in an area where 3G and 4G are equally strong.

Does 4G use more battery? I have read a bit of information online and views seem to differ.

Some suggest 4G does use more power, but the speed versus 3G means pages take less time to load, therefore resulting in lower consumption overall.

I will test it on my iPhone 8 Plus but I just wondered if anyone has any knowledge / experiences?

macrumors G4
May 26, 2016
I don’t think battery life will be an issue either way if you carry an iPhone 8 Plus.


macrumors Penryn
Aug 31, 2011
Never mind, I was thinking something else…
Last edited:


macrumors 68000
May 25, 2010
Yes, but it has a MASSIVE twist.

4G uses more power, but because it can load the data faster, it uses less power than having the 3g try to load data, and load...,it’s active for much less time.

This was proven through many test when the iPhone 5 was released. Prefer 4G over 3G if your aim is battery.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.