IPHONE 6

To the best of my knowledge there if you turn off the mobile data service the phone will become inoperable. In other words you will not be able to make any phone calls. That is what happened when we attempted to do that with my DW's iPhone 4.

You must have a data plan to use any iPhone

The above is true, but on our Samsung phones, we can turn off data and still have operable phone. Do it quite often.

All we want to do is turn off, when needed, the data usage...just not sure where to turn it off

M GO BLUE wrote:
All we want to do is turn off, when needed, the data usage...just not sure where to turn it off

Launch the Settings app on your iPhone or cellular capable iPad.
Now tap on Cellular — on the iPad, it's labeled Cellular Data.
Turn the option for Cellular Data to Off.


How to disable cellular data on your iPhone

You can do some searches on GOOGLE on the subject.

This is one that might give some useful info you need...
IPhone-6 DATA USAGE

I guess you can always go back to the store where you got the phone and ask for help...

I still use a good old flip lid phone like GIBBS has on NCIS...

Roy Ken

M GO BLUE wrote:
The new IPhone 6...how do you turn off MOBILE DATA USAGE?

I have an iPhone 5 running iOS 8. I can restrict my data use to WiFi only this way:

SETTINGS
CELLULAR
CELLUAR DATA to OFF.

should be very similar on the iPhone 6.

Happytraveler wrote:

M GO BLUE wrote:
All we want to do is turn off, when needed, the data usage...just not sure where to turn it off

Launch the Settings app on your iPhone or cellular capable iPad.
Now tap on Cellular — on the iPad, it's labeled Cellular Data.
Turn the option for Cellular Data to Off.


How to disable cellular data on your iPhone

This will work if you are approaching your data limit and don't want to pay for overcharges.
Your phone will still make calls but have no internet connection unless it connects to a wi-fi hotspot.

And you can always put it in airplane mode and use is as an iPod or play games. I kept my 32GB 4s and use it for an iPod.