How to turn off mobile data without using airplane mode
I have an iPhone 6 running iOS 9.0.2. Unless I am using wifi or mobile data I have airplane mode turned on as I understand (perhaps incorrectly) that it saves on the battery.
I normally turn off wifi or mobile data by turning on airplane mode, but I thought today that I would turn off mobile data by toggling off the mobile data button. But I found that all I seemed to do was turn off 4G (well 4G disappeared from after the carriers name) but I wasn't able to turn off mobile data completely.
Is there something in the settings I need to change, or is this normal?
In fact I have just turned off airplane mode and mobile data automatically turned on However when I go into settings, Mobile Data is described as being off. I thought it should have said that it was on.
I've now gone into Mobile Data in settings and the button is off. I've turned it on and 4G has now appeared after the carrier's name in the top left corner. So toggling the Mobile Data button on and off only seems to turn 4G on and off. Is this what should happen?
I'm a little confused and wondered if anyone can clarify this for me.
iPhone 6, iOS 9.0.2