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brothertruffle880Flag for United States of America

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iPhone 6S with IOS 9.3.3 - Cellular Data Being Turned on???? !!!! Not by me!!!

I got home and noticed that my cellular data was turned on.
I didn't do it.
What are the apps or ways cellular data can be turned on without me personally flipping the switch?
I pay a lot for my cellular data.
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Edward Pamias
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Do you have Wifi Assist on? If not turn it on, this way if you are in a WIFI area it wont use cellular data.
Go to Settings
Cellular data
Toggle off the apps you don't want using cellular data.

Run your test again to see if issue reproduces.
Go to settings, cellular, go all the way to the bottom and turn that on. I assume you have WIFI at home.
In addition to what Kyle mentioned you can also set restrictions, go to settings, general, restrictions, and modify settings there as well, such as background apps refresh etc.
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John
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ASKER

Hi All:

QUESTION:  Can an iPhone app turn on cellular data even when you have it turned off?

I have cellular data turned off 99% of the time.  And I only turn it on for email.
I did shut it off for many applications.
Network apps like email can turn on cellular data (because it overrides Wi-Fi). A basic phone has cellular.
SOLUTION FOUND!
Dear All:  I'll assign points to the useful suggestions I received however, in my particular case, here's the actual reason I randomly found my cellular data turned on for NO REASON!
===> I reset my network settings!!!!!!! <====
Turns out that when you perform a network reset "Cellular" gets turned on!!!!  Even though Cellular was formerly off.
Here's how to reset your network settings just in case you don't have the documentation to hand.
SETTINGS ==> GENERAL ==> RESET ==> RESET NETWORK SETTINGS
Thanks for the update. I am happy you were able to resolve the issue.