The new 5G wireless standard holds a lot of promise for accelerating your iPhone’s wireless data transfer speeds, but it can also take a heavy toll on your battery, quickly diminishing battery life when turned on. Here’s how to turn it off when you don̵
First, open Settings on your iPhone.
In Settings, tap ‘Mobile network’.
In Cellular, tap Cellular Data Options.
In ‘Mobile data options’, tap ‘Voice and data’.
In “Voice & Data”, select “LTE” from the list to disable 5G completely.
(You can also select “5G Auto” from this list, which allows iPhone to automatically deactivate 5G to save battery when not needed.)
Note: If your iPhone doesn’t include 5G hardware, you won’t see 5G as an option here. Apple added 5G support with the launch of the iPhone 12, iPhone 12 mini, iPhone 12 Pro and iPhone 12 Pro Max in 2020. Older iPhones do not support 5G.
Then exit Settings. 5G is now disabled on your iPhone. If you ever need to turn it back on, simply go to Settings> Cellular> Cellular Data Options> Voice & Data and select either 5G On or 5G Auto.
